depends what you want the GPS for. If it is for fully fledged Driving and sat nav for directions, tomtom 6 works fine, and is certainly cheaper than tomtom5 used to be.
Co-pilot theoretically should work fine.
Map4PDA seems to be working fine on mine, although Google maps doesn't.
I should imagine the others like route 66, destinator and Navigon etc should work fine. Although I have heard that there may be problems with I-go.
for stuff like orienteering and geocahcing (maybe this thing is a little large for taking on that sort of trip) Fugawi and ozi should be ok i suppose.
I personally use tomtom and Map4PDA and both works superbly. Although tomtom is horrendously slow to pick up a fix, whereas Map4PDA picks up in under 30 seconds.
Map4PDA is free by the way.
Edited by rhedgehog, 23 April 2007 - 01:31 PM.