please help me chose the right monitor, I don't know much about these things: currently I have two Dell's 20-inch ultra sharp monitors, and I want to add a third one. I'm thinking about getting a bigger one 22 inch, but I'm confused about the specs: the 20" Dell UltraSharp 2009W has the same max resolution (1680 x 1050) as the 22" DELL ULTRASHARP 2208WFP why is that? does it mean the 20" is actually much better quality? The contrast ratio for the 20" is also higher (2000:1 vs 1000:1 for the 22") . I want a big monitor, but I also want a sharp picture, is the 20" better? any other recommendations?