I was considering purchaseing a new 15" PB. But i have read around reviews and macforums and i've heard horror stories about it, like: latches that may or may not close. Gaps between the screen and keyboard. short battery life. Dead pixels and white spots on the screen. Just how common are these problems!!! How many people have defective ones and how many have PERFECT ones? Also i was going to get one BTO, whats apples return policy on BTO Machines?