Ive used the following watches:
-Suunto Ambit 3 Peak
-Garmin Epix
-Suunto 9 Baro (current)
Based on my hikes/climbs in Norway I can report that the Suuntos in general have way better GPS positioning accuracy than the Epix. A friend having the Fenix 3 seems to have similar issues…ie tracks all over the place when in steep terrain.
Suunto 9 is to me basically a modern version of the Ambit 3. Main differences:
-Activities can actually be deleted on watch at any time.
-Color display. I guess its way more snappy in cold conditions.
-Wrist HR which performs pretty shite. Probably good enough to monitor sleep etc.
-Ability to add/modify activities on Suunto app.Create routes on Suunto app. Only reason to connect to PC is to update firmware. Generally quick to upload recorded activites to the app.
-Galileo support. Although havent noticed any better accuracy. Perhaps a bit worse than for GPS only.
-More bells and whistles (activity/slepp tracking etc)