dude, if ur gonna wait for the 6600 to come out, i'd mite as well buy a 6800.
when the 6600 comes out,
i think the 6800 mite drop in price.
if ur gonna get a 6600, only get the GT version. The other version is garbage. They both only have 8 pipelines, but Everybody, i mean every single website, is sure that u will be able to unlock at least 4 of the pipes, therefore making it into a 6800, with DDR3 MEMORY!!!!!. So in essence, ur getting a card better than a 6800 for around 50 dollars less. but, den again, they mite laser cut the pipelines, just like they did with the x800 pro.
better pray.