what's your strap choice?

I probably wear rubber straps most often, but that's probably just out of convenience. I think metal bracelets look the best, but they're often heavy and jangly and cumbersome, and they're no good for physical activity. Rubber straps also usually pair better with a t-shirt and jeans, which is more my style. But when it's time to dress up, no question. It's all about the metal.

I voted leather because the best option wasn't listed... MN straps. 

For dressy occasions leather is the only option, though I'd take a subdued cloth strap over a bracelet if leather wasn't an option. 

Need an "all of the above option."

If it’s not metal, your mental. 
 

seriously though, a properly sized, quality, well engineered bracelet works for almost anything. I love rubber, silicone, tropic style straps for variety. Resin is required for some watches, and I’m ok with that. I have dozens of NATO and Zulu straps, but have fallen out of love with them. I just prefer a bracelet. 
 

leather… I could see a good rally strap on a chrono working, but for me leather straps are best left for when I’m dining at Le Cigare Volant with Niles and Frasier Crane. 

I like the comfort of a leather strap or the best (read Omega) rubber strap. However, for daily summertime wear, it’s my bracelets on >100m resistant watches so we can all wash up at the end of the day. 

I definitely prefer metal, but lately my skin has been reacting to them. Even my beloved Explorer. Seriously... I haven't worn a metal band in a month and I tried the Explorer today: it only took a few hours to react. This is my one allergy? Watch bracelets? For real?

I love the metal bracelets right up until I try to change the looks a bit and put it on a leather strap where it stays permanently.

I'm pretty evenly split between bracelet, leather strap, and rubber strap. I'm also a fan of bund straps, but not really a fan of NATOs. Zulus and single pass straps are cool, but I still prefer them to be leather rather than nylon. 

So if the question was what is my least favorite strap that would be a nylon NATO.

Really? That's a bit concerning mate. It's normally copper or zinc the body / skin reacts to. Have you tried titanium?