Also, if you can wait until March for your purchase the fixed Sandybridge version of the i7's will be out. (Yeah yeah, it's only a SATA problem, but where there's one problem others are bound to crop up.) Also, with the announcement of AMD changing how they present their brands you might even get to choose from the new AMD chips come March.
So if you can wait about 3-4 weeks you will have better choices from Intel and you might have better choices from AMD. (Wishful thinking on my part about AMD, but that marketing announcement is usually indicative of upcoming releases.)