The one that's well calibrated.
And causes less eyestrain.

CRT's, good ones, were quite expensive a few years back. It's obvious that they cannot be replaced by a cheap tft. TTft's are still evolving, however there are already some quite good tft's now, with impressive blacks and dark greys. But these are more expensive.

Colour fidelity is only really valuable for print. If colour fidelity is wanted when you print. In offset, this is a must. In home printing it is your choice to get a profile for your printer and hardware calibration for your monitor.

If you're happy, then it's all right. If not, do something about it.

I have tried prudent planning long enough. From now I'll be mad. (Rumi)