24" widescreens are fast becoming the new standard. Some places are selling the things for £150 these days - one day I plan to get a couple...
Must admit I don't think skimping on monitors is a good idea. It's the main source of IO you're going to have with your machine and a bad one can just make everything else a struggle (or sometimes even cause things such as headaches, I had that issue with a particularly old, flickery CRT.)
Personally I would've put 100 bucks towards monitors before concentrating on aesthetics.