It wouldn't be anywhere near as bad if it wasn't for the rip offs dude. 7970 was £400 or so at launch. Two would have been £800 I got fleeced that for ONE Titan.
As far as technology and so on have advanced 4k is the only real major one. And I fell for it and have wasted god knows how much. And I could continue with that mindset and do another £900 on another pair of GPUs but I'm not going to bother now.
Next buy for me (aside from sundries like storage and so on) is a 1440p monitor. I couldn't agree more about 4k and what all you guys have said about it