I think in 4850 AMD has a match for NVIDIA in the mid range graphics market and has stuck to AMD principles of more bangs for the bucks than the opposition. I think NVIDIA will have their work cut out keeping up with AMD’s aggressive pricing policy.
Lets hope they don't.
The way nVidia works currently means that technology is constantly pushed.....if they start to languish in well-priced mid-range cards, then the gfx card market may start to slow to a crawl with no-one pushing the limits.
There is always a price to pay for innovation and progression - Its just a shame that so many want it for free. It could cost us all in the end by stagnating the gfx card market