Probally a dell 2405. Give you great screen size and tons of room. I think the 30 is just to big. Ive also heard great things about BenQ 20 monitors. Also the have a 3 dead pixel warranty which is the best in the industry. I just suggest if your video card is able to, use DVI as your connection.
http://www.newegg.com/Product/Produc...82E16824014105