I would say get a Garmin and get one that can load topo maps to really have a great unit. They are very good and are a good tool to help you navigate but the old compass is still needed just in case. I have a Garmin Vista and like it. It hasn't failed me and I always carry a spare set of AA batteries just in case they die. It always locks in but thick tree canopy can cause it to be a little slower. If it acts a bit slow i just move a few feet and it usually locks in. Great tool to lock in special spots you want to go back to.