Hello. I am glad ATI made the fastest single card to date but i have 2 x 5870

and i am glad i did not wait for the 5970 because it is to big ( she said ;0 ) and also 2 x 5870 get better fps because of higher clocks

gamerro25 on youtube
Yeah. I would rather have 2x 5870, but mostly because i can turn one off when CrossfireX isnt working properly. It would be nice to see 2x5870 in there to make a comparison.
I still have "only" one 5870, and as far as i can see, 2x5870 are not worth yet (for most of the games, drivers are still immature).
I'll wait for fermi. If it is as good as the 5970, ill get one... else i can get a second 5870

Note that the minimum fps of the more expensive 5970 is sometimes lower or equal to the 5870 AND the 5870 doesnt suffer from Micro Stuttering. Hopefully this is going to get better with new drivers.