I've used the 920 and the fenix 3 as well and much prefer the fenix 3. Like others who have responded, I prefer it simply because it looks more like a normal watch and I prefer to wear it when I'm travelling. It definitely has a bigger profile than the 920 and may be a bit bulky if you wear it underneath a wetsuit or something else, but I just think its a better looking watch for every day use and it more than gets the job done for activity/sport.
I haven't used all of the activity modes, just running, indoor running, biking, pool swim, and open water swim, but with each of them its worked perfect. Other people that I know who have used it have had similar good experiences.
Raf
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