2nd 6850 or sell Asus 6850 and get a GTX 580

[Metroidman]

So I have a $500 Budget. I currently am running 2 1680x1050 monitors. I'm planning on upgrading to a 1920x1080 soon also and I don't know if that's a factor. I would prefer not to wait as if I do I'm sure the value for selling my 6850 will go down fast. I can either choose to get another 6850 and a monitor now and be done

Or I can choose to get a GTX580. And sell my Asus 6850 soon as my GTX580 arrives and put that towards my monitor.

So any recommendations?

 

[purple stain]

I've heard that the 68xx series perform very well in crossfire,i do not know much about the new 580's but i've been told that 1 card is always easier.

 

[plznote]

The 6850's will outperform the 580 but if you can get a good price for the 6850($150+) then the 580 is a good choice.

 

[Zenthar]

Based on TechReport's latest review, 6850s in XFire will slightly outperform the GTX 580 for less $$$, however the GTX 580's will be more consistent for games that don't scale well with multiple GPU and less prone to driver bugs for SLI/XFire.