I bought an 8800GTS because the 6200 just wasn't suitable for gaming. Others may differ, but I don't recommend the 6200 for gaming. Even after OC'ing and unlocking the pipes, it still just didn't cut it for Supreme Commander, CoH, and Doom/Quake.
IMHO, of course. And bear in mind I'm in Vista, which some state has a decelerating effect on 3D game speed due to driver immaturity at present ... and I run at 1600x1200, my LCD's native resolution. If you're happy with 800x600 or 1024x768 in a pinch, 1/4 that amount of data, then a 6200 with an OC and pipeline unlock (such as what this model can provide) should be wonderful.