i have the g1, and its a great phone, but i can trade it in for a Samsung Behold - Espresso plus 20 bucks lol. the g1 is a good phone, but it looks kinda ugly to be honest
I have a G1 as well. It's ugly as hell but it really puts to use the data plan. It's functionality well overcompensates for its bulky-ugly looks. I'd keep it just because of the android system. That thing is a living, breathing OS that only gets better each day.
I got a G1 a week ago and I could not imagine going to any other phone. It is so versatile. Looks are low on my scale of importance. functionality is what I look for in a phone.