So you would see performance increase with upgrading to I7 3770K on your current rig which would be the cheapest option.
Yes, I would see performance increase going to a 3770K, it just feels a bit of a waste seeing as Haswell is just around the corner...
I guess what I'm trying to say is that I'd like this machine to last a while. if that's not realistic, perhaps I'll build an FX based rendering machine on the side?
I only have one main machine at the moment, and it seems like big chunks of my gaming time is being taken up by rendering time
tho of course the xbox360 isn't that bad :P