The pentile makes sense if you care about how long your battery is gonna last every day, right?
The original Droid had a quality display but it really ate the battery. With the RAZR/D3/etc., Moto has now decided to sacrifice some display sharpness, etc. for precious battery life. For me, right now, pentile is good enough. Do I dream of better displays? Yes, but I right now I need the extra battery power.