I really want to know what you're gonna end up buying, because I am in the same situation as you, trying to build a new workstation for the same use as you,
I am considering an ES version though, I read that if you can find a Stepping number closer to the retail version of the CPU that means it could be good, but then there is no guarantee, since it's an ES, the prices on Ebay are certainly interesting, but you just have to be careful with which one you're buying
Anybody owned an ES here ? what problems we might have with it running, other than we're not supposed to own them