I've heard that SLI isn't that great, alot of games don't really benifit from it aperantly. But i want my next gpu upgrade to last college, so atleast around 3-4 years .
I am infact an fps player (cod 4, csgo and bf4). At the moment i have a good IPS panel that i use for everything (bought it for the good colors) but it's only 60Hz.
I really want atleast 120Hz with Gsync and more than 1080p, but at the moment i'm still researching for GPU.
Anyway thanks for all the help, i've pretty much decided on ASUS 780/780ti DirectCU II overclocked .