I am looking for guy's opinions on where to obtain the best maps for BLM land in Wyoming. I'm looking specially for a couple units (not yet sure which unit I'll draw if any...), but want to make sure I'm ready to obtain and/or buy right after I know my draw unit. I've been searching the net as well as the WY G & F site but not coming up with exactly what I'm hoping for. I'd like to be able to navigate the unit with a paper map for back up & a GPS chip for primary navigation. I've found a few places online to buy maps that are unit specific & also know about the GPS chips. I'm contemplating buying one for my android but not sure how my battery life will be or the satellite signal on my phone in WY will be. So a couple questions: 1) what are the best maps for BLM & other public lands for Wyoming antelope? 2) anyone have any experience with the android chips? I.E. how does it affect your battery life & ability to get satellites in WY. I doubt we'll be too far from power most of the trip but I don't want to have to keep my phone constantly charging in the truck either. Thanks for the help guys.