Garmin. Any Garmin you can find for under $200. And don't make it your main tool for navigation either. Bring along a good set of topo maps of the area and a good reliable compass. Know how to use both before heading out. I never rely soley on my GPS, ever!
I have the garmin legend hcx with topo maps loaded into it it came with a case a sd card and topo maps it's simple to run and batteries last a long time in it as stated above get a topo map of the area you are hunting it allows you to see a larger area at one time than the gps the screen is about an inch and half square
I've been using the basic model Garmin Rino, which last I checked was still under $200. It's got a built in radio and you can transmit your position to other Rino users, which it then displays on the map. But the basic Garmin line is about all I've used in my professional and personal adventures since the mid 90s.
The record books, that are put out by Boone & Crocket and Pope & Young and where I live is Henry Kelsey they are a great way to research a state or a province for big game. This does take some time but the knowledge it gives you, can be very valuable. Not all hunters have their trophies recorded, as where I live after the Hanson Buck became the new world record typical Whitetail, we saw a flood of hunters and now that has happened, some hunters are shying away from the record books but...