I've got two 20.1" normal aspect monitors right now (Dell 2001FPs), both being driven by the GT120 in my Nehalem Mac Pro. I want to buy a third screen that I can put in portrait orientation to better display printed pages and I'd like to know if anyone has any recommendations. 1) 24" widescreen aspect. 2) Ability to stand in a portrait orientation (tall, not wide) with the default stand. 3) Ideally a Dell model, since my other two screens are Dells (this would be nice, but is not essential). 4) Hopefully somewhat cheap (~$300). I see plenty of 24" models on the Dell site, but it is not clear to me which ones can be mounted portrait on the provided stand. I don't care about the screen being able to pivot; I intend to mount it portrait and leave it there. Ideas on what to buy?