I am looking for a Garmin GPS. I need an all purpose unit. I need one that I can use for Geocaching and driving. also would like to be able to use it on my ATV. I have a Garmin E trex. that i have had for a few years and it is about the cheapest GPS that one can buy as it contains no maps or anything. My current unit does not seem to be very accurate while geocaching, but maybe it is as accurate as the new ones are, i have nothing to compare it to. What do you guys suggest would be a good model for me. I prefer the AA battery format but does not have to be. Would like to stay as cheap as i can with one that serves my purpose. Thanks in advance.