Lots of threads on that already here in this forum. Do a search for GPS or whatever in the thread title.

ScottC (one of the forum moderators) loves his TomTom 910, and he's probably tried or owned many of the various models from different manufacturers.

Many of us like our Garmin products.

I have an older Garmin Street Pilot 2610, which I like. I'd rather have a newer smaller more portable model, but that would involve a new investment of over $500+ for new basic models. It's hard for me to justify buying a new one when my existing one still works just fine.

Here's a link to one of the more recent threads, but like I said, there are several more detailed threads here.

http://www.flyertalk.com/forum/showthread.php?t=565076

-David

See? ScottC posted before I had a chance to submit my reply.