I was faced with the same question on my newest build. I decided to go 4820k for two reasons. First, according to Newegg's reviews, the 1150 motherboards have far more unhappy buyers than the 2011 motherboards. I really don't care to be sending motherboards back or having to do another build in two years because mine died out of warranty (Think ASUS P8P67PRO). Second, when I do get a few extra dollars to spend again, I know I can upgrade to a 6 core cpu.