Well everything was reasonably perfect on my first macbook pro. I had a weird mishap with the firewire port (user error) and afterwards my superdrive refused to read certain discs. I never got a chance to test the superdrive before the mishap so I have no idea if the problem was related to the firewire mishap or not. Anyways I got a replacement and everything seems fine. Since I briefly had both macbook pro's I tested them side by side and the replacement reads the discs just fine (although it does take several seconds to load) while the one to be returned would spit them out.
There are things you could nit pick about though. My first one had an ever so slight scratch on a corner. It was incredibly small and you'd have to put your face up close to see it. Also, the light indicator for sleeping seems to have had some dust there. My replacement has a slightly loose battery cover. I can move it back and forth with my hand but you have to put some force on it to move it. It won't wiggle around from just carrying the laptop.
Both screens 9c84's look very nice and identical and no dead pixels. I think my f row keys may be slightly slanted but its hard to say. Maybe if I brought out a some capillaries or whatever those pincer measuring tools are called, I would know for certain.
When you read some of these threads you can get paranoid, but I think a lot of the people who are making complaints are OCD. No offense to them, I have some OCD myself. If I had a poor screen or dead pixels I think it would bother me quite a bit. Some people do in fact have genuine problems but what product out there really comes out perfect? I think that as long as you have reasonable expectations that you'll be very happy. I use to frequent these boards a lot, but since I bought my laptop I haven't logged on nearly as much. If I had problems I probably would log on more for help.
In a way, Apple does it to themselves because their designs are so slick and it is a premium product so they set high expectations. I think that if you go in with expectations that you will receive an incredible product with maybe a minor imperfection, you'll be very happy.