Upgrade.. switching back to ATI?

[SuperBOB]

What do you think?
Solely a gaming PC (particularly interested in getting max FPS in Starcraft 2, although this should easily do that?)

 

[SuperBOB]

Thanks for the advice chaps - its ordered now - as I posted.

I was already pushing my budget, so I didn't want to up the CPU :-\

My current gaming box is 6600GT, AMD64 4000, 1.5GB DDR2 (400mhz fsb?)
so I think whatever I get I will be happy with the performance improvement,