Get either a Mitsubishi or Sony, the biggest one you can afford. These are far superior to all other CRTs and current LCDs out there for imagimg work. The grids are a non issue for me, compared to the image quality the trinitron/diamondtron technology brings along with those thin lines. That spyder thing is great, basically "priceless" if you do color correction.
I use a Mitsubishi 22" with Spyder and Pantone OptiCal software, and can't ask for more in terms of image quality of the monitor and consistency with Durst Lambda output.