My dad got a Garmin Nuvi 680 for his b-day that I borrowed last weekend on a roadtrip to Maryland and Virginia. Never used one before and was amazed by it's usefulness.

I like the Garmin brand since I also use the Forerunner wrist GPS unit and I'm thinkning about the Garmin Mobile 10 or 20 for the Treo 750.

Does anyone use any of these units? Can you let me know how they perform on your Treo?

I'm interested in info regarding:

-Satelite pickup

-Screen Size - the NUVI is a 4.3" screen and that is real good. Wondering how a Treo screen compares since it's much smaller.

-The Mobile 20 Bundle looks like the suction cup cradle that houses the GPS receiver needs to be always plugged into the cigarette lighter to power the receiver... Is this true or does it also run off of a battery charge?

-Any other thoughts on the item that I haven't listed would be GREATLY appreciated!!!

Thanks,
Jerold