In that case (rotating the screens) don't get a Twisted Nematic display. I have the Samsung 2443SW, which, like the Samsung panels in the link, has a TN display, and it is simply not usable rotated 90 degrees. The color and brightness gradient from top to bottom is bearable in panoramic mode, since both your eyes see the same color on each horizontal line. Rotated 90 degrees it's simply awful, because each eyes sees a different color/brightness, and the angle between top and bottom of the screen is so much larger.