I bought a brand new Macbook Air 13-inch top of the line. One of the keys was scratched/blemished out-of-the-box. This is the second MacBook Air I'm on. First one had a few keys with marks. I decided to go to the Apple Genius in-store and they replaced the key with another one. The 'new' key has no scratches, but is ever so slightly shinier then the other keys - I guess due to wear as it might not be a brand new key. It is not noticeable to the average person, but with OCD, and a bit of staring in different lighting scenarios, I see the difference. What would you guys do? Have exchanged the laptop for a new one or just get the key replaced?