a bit higher priced..... is it better than the two i mentioned??
I would say its much better than any TN panel, including those you listed. Google it ~ IPS, even e-IPS has better picture quality and color reproduction than ANY TN panel you can buy. If you do buy one, I have some recommendations on the settings to make it look really sweet.
IPS is a little slower in theory, but I play FPS games and I hardly notice a difference... The picture just looks much prettier. That U2311H also has very little input lag.. Check the TFTcentral review.