When I used to buy CRT monitors for a multi-monitor setup, I always used to buy them together at the same time from same retailer, so their serial numbers were very close (sometimes within a 10-20) so that their picture quality/brightness/whatever was nearly exact as I had CRT bought monitors before it and they looked totally different. Is this the same with TFT monitors? I already own a 2 week old Dell 2407WFP and I intend to purchase two more for triple monitor setup and need them to look exactly same as I can't stand them being different.