Yeah...I don't think the E series are even flat screens.
The E series is Veiwsonic's entry level series.
The PF is the Pro series (PF = Professaionl Flat), they are flat screens, will go to higher resolutions/refresh rates, and have a smaller dot pitch (sharper image).
Quite a big difference actually. But then it depends on the person, some people are quite happy with entry level.
Some demand absolute minimum of 85Hz at 1600x1200 with a max of .22dp.
100Hz, .20dp preferred
