If you've seen the display on the Droid/DroidX and then look at a LCD Pentile display, you instantly tell the difference.
LCD Pentile displays give you good coloring like the AMOLED(also Pentile displays) but you lose crispness, even though it's a higher pixel density, the pixel arrangement is different.
I have an Atrix and DroidX and the display on the DX is crisper while the display on the Atrix has better colors. I'd rather have the crispness.. =(