I like KDS Avitron monitors. I picked up the 17" for my mother and it has a great picture. The 19" it probably just as nice, both use flat Sony Trinitron tubes.
You can check out the monitor at
KDS's website or here at
Best Buy's website.
I would not skimp on the monitor. If you will be using it for work you will only come to regret the heataches you get looking at a crappy screen.
Oh yeah, I use this
19" CTX at home. Costing $300 to $350 dollars it would better meet your bugdet, but in my opinion this monitor is only good for general use. I use it mainly to play games and surf the internet. AutoCAD is just a bit too fuzzy on it for my taste. You really cannot beat a flat screen for that kind of work.