Personally I would probably go for the i7 deal here.
Allthough personally I like AMD builds, You get 6gb of RAM, with the i7 and its triple channel not dual channel..
I dont know wether or not you are intending to upgrade this maybe in the near future or ever?? Or are you going to over clock?
You could probably get the AMD Phenom up to 4Ghz with a little work.
I also like the storm scout casing a lot more