Best Monitor for Photo Work

Hi, I am getting a blue hue accross parts of my monitor, it looks like someone had used a blue highlighter to lightly draw accross the screen - tried degauss but it did not work ! Is my monitor on its way out ??

If so what would you recommend a CRT or TFT Im looking for a 20" if anyone can help with make / model best for digital imaging I would appreciate it. John S