Thanks Cleee. Exactly my thoughts on that reply.
Oh and to clarify Mal, I never bought too early as I love my 680 and the hassle free gaming it gives me. I don't want to waste a step up program (which you should research before commenting on, making yourself look silly). If I go 3 screens, then the 690 would be a cheaper option than spending another £430.
If it is £800, then no but if it is £700~ then maybe.
np

For 3 screens 2gb VRAM isn't enough to do justice to the power. Have you considered 685/7XX?
ps, what's your battlelog ID?