I like my 8500DV, Im not a hardcore gamer, and it seems to run the latest games ok. There is also a 128MB version of the AIW Radeon 8500DV coming out soon.
For the best 2D performance, Multimedia experience, and capability, (tv in/out svideo in/out, composite in/out, plus the DV capabilities) and not to mention the other goodies as a "TV guide" software, and Counter Strike, go for the 8500DV.
However if youre a hardcore gamer go for the GF4/TV tuner.