A-GPS works fine for those who can use it. I don't have a bluetooth enabled phone, so I can't benefit from a-gps. I have to go through the old fashioned 2-5 minute lock cycle every time. Then again, I'm up near the 45th parallel, so GPS for us blows chunks anyways, unless you've got a Garmin. You really have to be below the 50th parallel before you start getting decently quick GPS locks. Or at least that's what I've been seeing. And to top that off, the best signal strength I've seen from any satellites has been about 50% around here, even on clear days out in the open under an open sky.