If you will be hunting from a base camp and can charge your phone, I would check out the OnX Hunt app for smartphone. Its about 40 bucks for a year (or free with RMEF subscription).
The trick is to download the maps before you leave, then set your phone on airplane mode.
It could save you a lot of money. I got sick on buying garmin products, the interface is poor compared to a smartphone, expensive, map cards are expensive, and the technology will be outdated in a couple years.
