I loaded the Camera Raw6.7 update for CS5 and it works well. LR3 isn't recognising the Raw files yet, but I don't use it.
Haven't taken many shots yet. No comparison ISO shots, I'll leave that kind of stuff to Bryan.
Here is a shot of one of my dogs SOOC.
35mm 1/25sec f/5.6 ISO25600
[img]

Bullet_1 by Steve's Life, on Flickr[/img]
I will post a bit of a hands on shooters review, a bit later.