Nvidia Gefore 6800 XT Vs. ATI Radeon X1650 pro

I am currently using a Ati Radeon X1650 Pro and Im looking for a cheap better alternative, after looking over the spec of all Graphics cards here i looked up the 6800 XT which appears to be better even though older than mine and i can easily pick it up for a low price of around 33 pound ($55ish).

Would it be worth it?

also my spec

It goes like this.
6800 GS/GT > 6800XT
6800 GS/GT >7600GS
7600 GT >6800 GS/GT
7600 GS=x1650pro
7600 GT>x1650pro

Basically you would be downgrading

i just bought a innovision nvidia 7600 gs and its awesome !! i say go with that