Looking at the specs and comparisons, it seems the only difference is the i7 4790 has a higher clock speed at 3.6GHz base and 4.0GHz turbo.
So with that in mind is there a point going the i7 4790 route? Also they will be bringing out the unlocked "K" versions at the end of the year apparently, no option for it now.
Would there be a point waiting? Or just go the i7 4770K route?