The good ones have good drivers and good spectral profile.
The cheap ones will light up just fine, but the drivers are buzzy either in the beginning or later on, and the light profile has sharp spectral peaks which makes _Decor_ look _Not Good_ .
Does it matter... mmmmmm..... If you don't want wall colorant to impact Color accurate monitors, then YES. it's quite important.
If you're not even calibrated, it hardly matters, the Monitor is all over the place..