LCD screens

Whilst choosing hardware for a new exhibition I was reminded that not all LCD screens are equal. I need to use 22" screens in both landscape and portrait mode, I got a test panel (full HD) and it is really good in landscape mode it doesn't work very well in portrait mode - the viewing angles are not very good. The panel was a TN type panel, I happened to have another 22" screen with a IPS panel which has great viewing angles in both the horizontal and vertical plane.