Yeah, we do need to know more about your needs.
There are SO many options, and one of the first things you need to do is figure out what maps you want, since much of the hardware is basically the same when it comes to receiving GPS; it's the mapping that distinguishes them.
You also need to consider battery life, whether you need to broadcast your position, PLB options, weatherproofing, storage, whether you need turn-by-turn directions, whether you want to interface with your photos, and on and on. I'd wanna get something that is upgradeable as far as possible; both content, software and hardware is changing rapidly.
IMHO in the western US the best maps are the USFS topos and the USFS recreation maps. I think Avenza's PDF Maps app does the best job with the latter, but it isn't ideal for navigation on the go. I haven't used the Garmin or other proprietary mapping units in quite a while, although my friends do. I prefer the USFS stuff because, sad to say, you need to know the most current restrictions on the ground, and their stuff is usually the latest. Perhaps because they've had to complete all those road inventories.