A 20" Westinghouse monitor I currently use. Even with the 8ms response, I've seen no smearing or lag and I'm very pleased with the color quality and contrast. And believe me, I'm picky!
http://www.westinghousedigital.com/d...spx?itemnum=47
I also use a Westinghouse 19" monitor in my dual setup but it looks like it has been discontinued.