I like the Garmin Vista and mine is loaded with the topo maps of various states I hunt. I like the unit because it is small and works real well. I don't usually have any problem getting it to track even under heavy cover. On some rare occasions when it is slow to lock I just move to a small break between the trees and it pops right in. I have owned an older Lowrance and it too worked well but didn't have the mapping capability of the garmin. Whatever unit you get make sure it will download maps. If you want one mostly for hunting then a smaller unit will be easier to use and won't get in the way. Good luck.