Just installed my new GTX280 three hours ago and its is just what I expected! It's all around 33% to 66% better than my 8800GTX was. Cost me half as much as the 8800GTX two years ago. And the GXT280 has none of the problems that the 9800GX2 I tried tried out for seven days had. w00t!
After two years of total enjoyment with an 8800GTX; I've upgraded finally and I LUV my new GTX280!