I am with Marc - look for S-IPS panels if you can. They are usually more expensive though. And manufacturers often change the spec without saying so. Dell did this with the 24" wide LCD. Early ones were S-IPS and were great. Later ones were not and a lot of people complained.

I have 2 HP LP2065 S-IPS 21" Side by side. Very nice for the price. Might want to see what HP have in the sizes you are looking for.