Which one would you get?

Tough choice I want them both! But, if only one then probably the Tudor for me.

I go Tudor for one reason:

Tudor - 20mm lugs

Omega (38) - 19mm lugs

FWIW - The AquaTerra 41 has 20mm lugs. If you had listed that one I would say the Omega.  I presume the 41 maybe too large for your wrist, since you noted the 38mm.

First off - great watches (including your speedy). I don't think you'll go wrong with either option in the end, but I think you may have answered your own question. If you already have the Speedy which is pretty much doing double-duty (even if only a semi-solution as a dress piece), than I think your best bet would be to get the Tudor. That way you never feel like your stealing time from your current watch anytime you might wear the AquaTerra. Just my two cents - and I am sure others will argue hard for the AquaTerra. Good luck on the decision... again, either way you can't lose!

You’re lucky to have such a hard decision. I would go with the Tudor. I’ve tried the Aqua Terra and didn’t like the fit. The Tudor will age better. 

This is a great debate and the very one I am struggling with at the moment. I am leaning more toward the 41mm AT however. The AT seems to be a much better strap monster then the BB58 to me. I like the AT on a rubber strap and leather where the BB58 doesn’t looks AS good on a rubber strap. However I think I would be more protective over the AT whereas for the BB58 I would be willing to male it an everyday “beater” if I had to. Omega to me offers a lot more with their movements but I don’t think you can go wrong with either. (I’m also a fan of a date window myself)?

My vote is for Tudor.  I own one and love it (not the 58, North Flag).

I'd take the AT 10 times out of 10, but that's just me. Yeah, it's the movement, and the styling knocks me out.

I just reviewed the new AT small seconds and though it's a bit bling, the fit and finish is just on another level compared to the BB.

I would look at your collection and ask: do you want to add a tool watch or a dressy sports watch?

Have owned the original BB in blue and red. Have owned the last black dial AT quartz model. 
 

all three sold but have a BB58 blue on my buy list. 

Nice suggestion 

having the same issue like others. initially wanted the bb58 blue then thought I’ll get the SMP300 blue bc better build quality and same price range but when I went to try it on i fell in love with the AT 41mm and will likely go with that choice

great review! Just saw it now which lead me to this site :)

Difficult question!  They are so different.  Either could be a great ‘one watch’.  The BB on the bracelet is fairly well-mannered and sophisticated for a tool watch, so you’d probably be fine with that one.  I have an AT41 — and love it — but it feels a little blingy sometimes, plus with all the polished surfaces it is a fingerprint magnet.

Spec aside, I feel OMEGA AT is more dressier than TUDOR. While the Black Bay series offer more of Tools Watch looking.

I owned BB58 Black dial and Seamaster Professional 300m Chrome dial. It’s defiantly two type of watch, but you never go wrong with both of them. 👏

These are some great choices!

If it came down to it, I would lean towards the Tudor. After trying it on multiple times, I totally understand the hype of this watch. It wears well and can be worn with a lot. 

While the Omega is a bit dressier, it just depends on your lifestyle and what you see yourself wearing the most.

Well, one has a date window and the other doesn't.  If you like to know the date on your watch, this could factor into your decision.

I'd go with the Tudor, the only real reason being that I don't like the dial pattern on the current generation of the AT. The fine vertical teak was cool, the horizontal one does nothing for me. 

Go try both of them on. I found the AT to be too dressy once I put it on the wrist. For me, I'd go with the BB58.

I would also go with the BB58.  Both are excellent watches, but the BB58 will save you some cash and looks to me like it is one of those watches that could make lots of memories.  I would highly recommend that you try both of them on -- nothing like seeing a watch on your wrist.

Tudor. I have 3 Omegas, but the AT is a line that just doesn’t appeal to me. 
 

Thank you all for the truly amazing and thoughtful advice. I made a decision and got a watch just now. To recap from your comments:

• Both watches are very different!
• With either, I can swim without worries in the ocean.
• The AT can act as a shiny dress watch, the BB simply not.
• The BB is a true tool watch, and will "age" better (scratches and bumps on the AT would make it look much less appealing). 
• The AT has a much more sophisticated movement and generally a more refined built quality than the BB.
• The BB is around 30% cheaper (retail).
• AT has a 19mm lug width (BB has 18mm), which will make it harder to add most straps to.
• The decision depends on what you currently have in your collection. How does it complement what you currently have?

I currently own a quite shiny Speedmaster (38MM Co-Axial) which can act as a dress watch. Also, some of you said I should just try another brand. @bevelwerks' advice was great and helped me make the decision: 

"If you already have the Speedy which is pretty much doing double-duty (even if only a semi-solution as a dress piece), than I think your best bet would be to get the Tudor. That way you never feel like your stealing time from your current watch anytime you might wear the AquaTerra."

Hence, *drumroll*, I just stopped by the Tudor Boutique here in Saigon and picked up the blue BB58, making this a nice, and versatile two-piece collection. My Omega for work, events, and special occasions; and my Tudor for day trips, travel, the ocean, and the outdoors.

Again, thank you, all, very much, I'm very happy.

Congrats on your decision. As an owner of the black dial BB58, I feel that you made the right decision - it's a superb watch, and huge value for the money.

Congrats - very jealous of both pieces, especially that Speedy. 😍

Hmmm, I lean Aqua Terra on this, although I have a slight gripe with the 19mm lug width, as well as lacking the functionality of the previous generation (quick set hour) 38.5mm 8500 movements. In this case you get a standard (yet wonderful) 8800 SMP movement. 
 

If you can find the “sky fall” you’ll have the best of all worlds, including a fully brushed bracelet. 

I've always liked Tudor but I tend to go for things that are less common. I see the Black Bay everywhere on social media. The Aqua Tera is a bit more unique so I'd likely go with the Omega personally. However, if I was going Blue I would go Squale 1521 purely because that blue is stunning with the orange minute hand.

I’d rather buy a used BB58 + BB36, both of which come in blue, for around the same price as the AT. You can find the 58 for around $3,500 on a bracelet and the 36 for around $2,500 on a bracelet. So $6,000 for both vs the AT for $5,700. 

Congrats on your decision!  So many great comments...sorry I'm coming in late to the party.  I have the AT in blue, and it's stunning.  I've not had the chance to wear the Tudor in person, but it looks amazing in every pic I've seen.  Sometimes you just have to try it on to get that sense if it's right for you.  For example, I really liked the Globemaster...but it didn't speak to me when I tried it on.  The AT however...it just felt right.  Regardless, congrats on the new watch!

Both are pretty special watches and although I'd personally take the AT due to its versatility, if I was going to buy a BB58 I'd go for the blue in a heartbeat. Congrats on a great purchase.

I would go for the Omega. But only because I have already a diver watch and I am kind of dressy guy. Did you think about the Omega Seamaster with a blue dial?

Hello. Not sure if this thread is relevant anymore, but here's my input:

1. Both of them are gorgeous watches with lots of history and DNA. 
2. The Tudor is sportier and I can see it being worn mostly with a casual attire. Doesn't really go with anything more elegant.
3. Omega is sort of a Jack of all trades here. it can a daily wearer as well as a dressier watch if need be.

I cannot say get this or get that. It's entirely up to you, but if it were me, I would choose the Omega.

Seb