Thing is, the 780i is so much more expensive (at least £70). I don't know if it's worth it.
Maybe I should not go down the SLI route seeing as how the GX2 is very powerful anyways.
If I was to do that, would you say it's better to get the 750i board (because it has PCI-E 2.0), or should I get the P5N-E or maybe the PK5 P35 (which comes highly recommended)?