Point taken, the x20 it is then...unless of course someone can convince me otherwise in the next couple of days.
It is correct that 22" use TN panels and dont have that great of image quality.
Either go for a 20", 20.1" or a 24".
It would be sweet if you could go for a 30" or 27" (I wont get carried away).
Just take a look at that guide I posted above and you will see everything you need to know about buying the best LCD for your money.