I know it is a break from the $100 budget but a 4k (3840x2160) monitor is almost a necessity for me right now. I have two Seiki 39" each of which has replaced four 21" monitors.
http://www.amazon.com/Seiki-Digital-SE39UY04-39-Inch-Ultra/d...
That author has some interesting thoughts on 4k in general as well as the Seiki brand.
I found the 50" version a little too large for my purposes I have my monitor wall mounted about 3ft in front of my face and 50" would create the Wimbledon effect.