Between,the X4 760K,A8 5600K,the FX6300 and the FX8320,I find it hard to recommend the Core i3 CPUs,other than for certain niche situations TBH.
Not just i3, Pentium 3.2Ghz Haswell can be had for under £50, Haswell mobo about the same price, and then add a dedicated GPU, for a similar overall price to an 6800K and AMD mobo setup. The Intel system would perform better and consume less power, so it def has it's place. I have built enough of them to know they do lol.
Both Intel low end CPU and AMD APU setups are viable options.