I wanted to thank everyone for all the replies.
The 670 looks pretty good. But a little out of my price range.
Primarily I need a card to run 3 displays.
Still running 10.6.8 but will be moving to 10.8 as soon as I make sure all of my graphics and color management apps are OK in 10.8.
I was mainly looking at ATI but if Nvidia can provide a boost to Photoshop and in general Adobe apps that would be a nice bonus.
One note, all three of my displays have DP and I would have loved to run them all on DP/MDP if I could but not necessary.
I have been looking at various 7950's from different manufacturers selling on Amazon for around $300.
I see that the Sapphire Radeon HD 7950 Mac Edition is out now.
What's the difference between the Mac edition and all these other ones?
Just the price?
7870 eyefinity 6, has 6 mDP ports