I just picked up two Dell 19" for just over $500 each. Right now, they are the best bang for the buck based on performance reviews VS price. I also bought a dual head video card to drive them. After trying a dual monitor system and my friends company I fell in love and had to spend the money. Being able to have two screens, two programs running side by side is amazing. I do a lot of CAD work so it really makes things alot easier.