I have the Viewsonic VPD-150, I got it rifurbished at a decent price, no defects.
I love how it looks(really sharp), and the space it saves. This model is a digital one, that is, had a DVI connection instead of an analog VGA plug. A digital connection really helps image quality, and you don't ever have to mess with any settings, because LCDs are digital, not like CRTs, and its stupid to take digital images, convert them to an analog signal, and then back to digital at the monitor. So if you can, get one with DVI connection and a card like a GeForce MX with DVI out
But anyway,
Games look just fine on mine, its awesome for text, just DVDs are sometimes slightly lacking.
Try and fine a decent price, just be aware that cheaper models will be lacking in brightness(go at leas 200 lumens), have a poor viewing angle, and may have on average more dead pixels
If you want to read into some of the technologies behind LCDs, at tomshardware.com under the guides section, there is a 3 part article about TFTs, its a little old, but good reading
Hope you found this helpful