Unless you are into record seeking overclocking, there is no need for an expensive motherboard.
A 20% overclock should be easy with any of them.
Pick your favorite brand, they are all good.
I think the sabretooth models are a bit overpriced.
For gaming, there is little value in a 4770K vs. a 4670K. The extra hyperthreads are unlikely to get used.
I do think, that the 4770K chips are likely to be better binned and have a better oc potential.