Recommend what you own of course, but I’d say a 910XT too (if you can find one). Mine has had lots (and lots) of use, and it’s been a great watch, it’s done everything I’ve needed it too, and it’s worked completely faultlessly the entire time. If you can get it for <200, then bargain indeed.
All that said, I have now got a Fenix3 on pre-order (sapphire, so ‘delayed’ 🙄 ), but only as I do now need more navigation features than the 910XT / 920XT has (and don’t want to lug a handheld around), otherwise I’d just use my 910XT until it it died of natural causes (then get a 920XT).