I purchased from BB but then we have no Apple or Microcenter here. Other than having them try to push that extended warranty on me, I have no complaints. I even exchanged the 13 inch I bought a week later for a 15, no hassles whatsoever. If you must buy from BB, stand your ground and don't let them sell you that extended warranty or any of the other stuff they try to get you to buy. I'll get my extended warranty through Apple Care before my first year is out.
What's wrong with Best Buy? Whats wrong with their Service Plans? They don't offer insurance. Best Buy's MacBook(Pro) Service Plan is much better than AppleCare. AppleCare doesn't cover any accidental damage. Best Buy covers any damage that occurs. Regardless of how it happened. If they can't repair it, they will replace the machine.
They pretty much told me that at the end of the two years I could break the machine on purpose and it would be replaced, that alone makes it better than AppleCare. Now, personally I could never bring myself to intentionally harm my MBP, but it's nice to know.