I have two 15" TFT's that I got quite cheap. 17's would be nicer, but at the time these two 15's were much cheaper that even a single 17.
Shop on eBay for a Matrox G450 for dual outputs from one card for small money and no fan noise. Not the latest tackle but they work great and punt out a good strong signal which allows me to use 5 metre long monitor cables. (I have an ATI card in another machine which doesn't like the long cables at all.)
A CRT is basically a ray gun which fires electrons towards your bonce all day. Guitar pickups hate them too, so that is another benefit of TFT's.