Apple Stores are great
After a long journey getting my 933mhz, I'm a firm believer in purchasing directly at an Apple Store (not online). Online is a pain unless you really want a BTO (which will take a few days extra to ship, usually). If you're within an hour and a half of an Apple Store, just go there. You'll ensure that you receive the product that day, you'll get to enjoy the lovely store, and support Apple's retail project (sort of).
Also, you can get education discount at the stores (started two weeks ago) if you're a student, which means even less of a reason to go through online retailers.
Lastly, the Apple Store gets new products immediately, so you can pick it up the same day that it would normally start shipping from a retailer or Apple itself.
Course, in some places tax is greater than others. Fortunately, Mass only has about 5% tax, which isn't too bad.