I use a Garmin GPSMAP 64ST. It came pre loaded with a nationwide topo map. Its accurate to a couple feet, and takes a memory card. You can also edit your trail, traps, and anything else you want with the software that's included. Its waterproof, rugged, and with lithium ion batteries lasts a really long time. Takes AA batteries, and I carry it on a beener. It uses both GLONASS and GPS. Also is compatible with Birds Eye, which are super up to date Satellite images on the GPS.
Mainly I would avoid anything that's not name brand, even if its half the price because the company may not be around in 5 or 10 years for support. Also avoid anything rechargeable. Being able to swap batteries is priceless. Thats the biggest downside of cell phones. Touch screens are a huge no no when it comes to longevity, reliability, and durability. A lot of them are going that way.
I spent $350 when I bought mine. These are now just over $200. If it broke, I would happily spend the $350 again if needed. I have used and abused this thing to death since early 2015. Its been through every type of extreme environment you can think of. Death Valley, top of the Rockies, Swamps, soggy camping, snow shoeing, bicycle, everything. All the ports close up, the battery bay locks solid, I cant complain. I trust it completely. I just got home from the trap line in the dark and put it away.
If you have any questions just ask. I am a technician by trade.
Willie Firewood made the same points as me. If you REALLY REALLY are going to rely on it, but a dedicated GPS. Dedicated devices always function better than other devices that do multiple things. Kinda like the TV/VCR combos, or an 'all in one' welder.
Last edited by SwoleTrapper; 12/05/18 08:23 PM.