I wonder if this is a wide-spread paranoia. I just now found this thread, and there's no way I would be reading all thirteen pages of posts. I own both a Macbook Air (1st generation) and just bought an Aluminum Macbook (Late 2008) 2.4 GHz with 4 GB of RAM. The display on the Macbook has the following numbers:
Manufacturer: 00000610
Model: 00009C89
Serial Number: 00000000
Mafufacture Date: C3B1A800
I compared the Macbook's screen to the Macbook Air's screen a few days ago (before I found this thread), and my opinion is that the display on the Aluminum Macbook is way better than the one on the Macbook Air. Granted, I did not check the blacks, and neither did I run any tests. Because I did not think there was any problem with the aluminum Macbook's display, my first impression was that it is superior to the Macbook Air's (1st generation) one.
So, my advice to those who have bought their aluminum Macbooks is to calm down. Maybe go to the local Apple store and run screen calibration on both Macbook Air and aluminum Macbook with the same settings. My opinion is that you guys are being irrational. As for the Macbook Pro's display, I don't have one, but my co-worker does (previous generation), and I will compare my Macbook's display to his tomorrow. When he looked at my Macbook the other day, all he said was "Wow, I wish I could sell my Macbook Pro and buy a Macbook like yours."