Slightly ligher spots on black screen? NOT dead pixels...

This is my 3rd MB after a series of exchanges for other problems. So far this thing is flawless.
However, I noticed that on a BLACK screen, there are two small oval-shaped sections near the center that appear SLIGHTLY lighter than the rest of the screen. It is really only noticeable when the entire screen is black. The areas simply look like there is a finger print on the screen, but us BEHIND the plastic. I tried using a microfiber towel to clean the area and it is not externally.
I know I'm being picky, and the spots are not visible at all on any other colors and looks smooth; it is only on a black screen.
I really dont feel like taking this in a 3rd time (for a 4th computer). Should I just live with it? It's still better than the other previous MB's as far as issues. My only worry is that my exchanged computer or screen will have a dead pixel, which would be worse than this honestly.
Your thoughts? Is this normal? Is some color discrepancy normal on pure black colors? Thanks!

I think everything has flaws; it's just whether or not they're visible. The irony is you could have one that has one or two cosmetic defects and it lasts you 10+ years; however, could have one that is cosmetically perfect, but go through two or three logic boards in its lifetime. Anything is possible.
I can't say that you are or are not having problems that are "normal" b/c computers are almost synonimous w/ cars these days as far as defects, warranties, and repairs.
My first blackBook had a slight bulge in the bezel, next to the isight--took it back to Apple three days later, they exchanged it no problems. The new Blackbook they replaced it with had a bad Return key (the scissor was broken). They replaced they key, no problems so far and I'm very happy w/ it. I have AppleCare not b/c Apple would tell me to buy it, but b/c I plan on keeping the computer for 3 years at minimum and don't want to deal w/ repair cost (if any).

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