I really want to buy an iMac, but with all of its problems, I think I want to forgo buying a BTO from Apple and maybe just buy a stock model from the Apple Store in Tysons Corner or Apple.com so it's easier to deal with any potential problems. I just some basic questions though: 1. Can you use the education discount at the Apple store? 2. Is the return policy same for online purchases? 10 days? How much do you have to pay for repackaging fee? 3. Can you return an online purchase to the store? 4. Is it easy to install RAM and an AE card? 5. If there's a problem, will it show up right away? Or could it possibly show up later? Thanks!