About 15 years of collecting…ups and downs, selling and keeping. Another significant birthday is coming up and I’m considering either a Zenith chrono or either a Longines Zulu or Tudor Black Bay GMT (I travel a lot, the GMT would be useful.)
If you want to go the old style GMT (slaved 24 hr dial) route(rotate bezel to set GMT hour).Vostok has some models that might suit you for super cheap. https://meranom.com/en/amphibian-classic/17/vostok-watch-amphibian-classic-17036b.html
-20 to +60 is the factory range but you can adjust it easily by yourself. (I recommend google and YouTube before attempting)
It’s not the most accurate compared to modern movements, but it’s functional watch. I recommend DHL for shipping (will only show up if you just buy watches no accessories.)
I don’t have any advice for you, but that Polaris chrono is sweeeeet.
Have a look at Mido Ocean Star GMT, it’s a great watch, with true GMT movement.