I received my new rMBP after I returned one which had a loose bottom cover. On the new one I have ghosting which I can't see in my daily workflow but if I make a grey wallpaper, its noticeable. If the ghosting stays like it is now, I can live with it. My work really depends on a MB and I can't work without one, so returning it and waiting a week for the new one to arrive really bothers me. Also my current rmbp is (except the ghosting issue) flawless and I'm feared, that I might get a new one that has worse ghosting or other issues (creaking case, loose bottom, cosmetic issues, dead pixels, etc.) My question is: Should I keep the one I'm having now or might the ghosting get worse with time?