oh my god, you cant decide? ill help you, forget amd, and forget the i7, get the i5 3570k, and spend the money you saved from getting the i7 on a better graphics card. get at least a 7850, not a 7770. the i5 is good enough for maya etc.
If you are rendering and encoding, go with an Nvidia graphics card. That will speed things up. I recommend something from the 5 series. I say go with the 3770K so you can get the extra threads, they are worth it when using pro apps, but not so much in gaming.