Good, high end CRT monitors are probably the best option, but I've recently read that just about any CRT you will find new these days, will be a cheap POS because they are just too expensive to make compared to LCD monitors.
Of course, some CRT monitors are better than others.
Either way, color calibration is important...so you need a calibration device (eye balling it isn't good enough).
Well im asking because I have my viewsonic P815 pro series that is designed for graphic's . Thing is is it is a 21 inch and it is a big CRT but if it will be better I will run it on my second output and use iut for PP.