Very nice if I was to go with a gmt, chronograph and smart diver from my collection I’d go with these:
For value for money I’d look towards the smaller independent brands. In Europe of the top of my head I’d look at Formex and Ollech & Wajs in Switzerland, Echo Neutra in Italy, Tusenö and Maen in Sweden and Christopher Ward and Farer in the UK, though there might be import costs if you’re in the EU from those last few. I’ve had watches from all of them other than Maen, all do good quality use mostly Sellita movements so easily serviceable and have plenty of what I’d consider GADA watches.