I just started geocaching recently and since I didn't want to invest in something I might not continue on with I decided I would just use my phone as my gps device. I am now addicted to geocaching, and although I really like the features of my iphone + geocaching.com application, the battery life is horrible, the accuracy is sometimes off, and I'm afraid I'll drop and break my phone while scaling rocks and trees. That said, is there a GPS unit out there that has similar features to my iphone. I like the fact that I can do everything right from my phone (send in logs, look up/download caches, view descriptions/hints/logs, take pictures (though not a priority)). Basically I'm looking for a more rugged iphone with better battery life. I've noticed people mentioning units not being compatible to macs (which I have) but I haven't actually had to hook up to my computer for anything, so I don't know if this would be a factor or not, but if so I need a MAC compatible unit as well. Any suggestions would be greatly appreciated.