i've been doing a lot of research on cameras/video cameras for this coming winter...
The Flip is garbage. I mean, it's not garbage, but it's not going to be very good for snowboarding.
The GoPro looks awesome and I really want one, but I don't think it would make a good "only camera you own". No viewfinder. No zoom capability at all. Otherwise it's rugged and waterproof to 180 feet and takes sick video if you're close to the action, and the POV footage is good, they have pretty good image stabilization that the Kodak won't touch.
The Kodak Zx/Zi series (Zx3, Zi8) look to be OK for a budget cam you can find them for $100-149. The Zi8 is only marginally more expensive than the Zx3 I'd get the Zi8 if pocket cam was what I wanted. Sound is so-so. I've seen some youtube edits, they're a little shaky at speed but take good video if your stationary filming.