Hey everyone, I currently own a mid 2009 mbp. I used to own a beautiful 24" ACD, but then I ended up selling it since it was just too big at the time. However now times have changed and I would love to have a larger screen again! I toyed with the idea of buying a 27" ACD, but then I would feel someone like a fool since the 27" ACD have already been superseded by the Thunderbolt Cinema Display. Even though I am not buying a new mac now, I figure my next one in the future will have thunderbolt, so I might as well hold out on the ATD until my computer is completely compatible. Therefore this brings me to my question. There is a 20" ACD on Craigslist. It is listed for $150 but I think I can talk the seller down a little bit more. However, it's date of production was in 2005 which means it is the revision from June 2004 with 250cd/m2 brightness and 400:1 contrast ratio versus the later revision in 2006 with 300cd/m2 brightness and 700:1 contrast ratio. Visually, is there a difference between two two monitors when it comes to day to day activities? Do you think I will notice and difference and be dissatisfied with the older revision. Furthermore since I have owned an 24" ACD in the past, will I be satisfied with an older ACD such as this one. Thanks for the help!