So I decided I wanted to build a gaming rig, got tired of console gaming. I recently bought all the parts I need to build my gaming rig but I'm having a hard time settling on a video card. My options are Asus Geforce GTX 780, GTX 680, or the GTX 770. Ive been reading alot of forums and reviews and their are minor differences between the 3 as to performance and gaming. The 780 is only a 20% increase in performance from what ive been getting from forums and reviews and it wouldnt hurt to save a couple hundred dollars. So my question is, should I purchase the 780 for the few extra frames id be getting? or save a couple hundred and go for either the 770 or 680? I also want to include that I want to be future proof for the next 2 years without upgrading. Sorry I know this is an Apple thread and I'm not sure if questions like these that regard PC builds is frowned upon but thought id give it a shot anyway and see what kind of feedback id get anyway. Much appreciated.