I only buy Samsung. I have been completely blown away by their fine, bright picture. I own 3 of them now and they are absolutely flawless. They put Sony monitors to shame (not that Sony ever made a good monitor anyway). My fav is currently the 950p, I personally find the semi-flats to be much brighter and more detailed than their flats (or any flat for that matter). I bought a flat after selling my 950P to a friend and after about a week I gave him my new one and took my old one back. The flat just didn't look as nice. But that's me.
Look at monitors, if you can, in a Windows environment. Move some icons to the far corners and look for distortion or discoloring. Try a white background and some other solid colored backgrounds. Don't immediately dismiss a monitor if you see this; many have adjustments that may clear this up. But if after you have played with the adjustments, and it's still muddy, move onto the next monitor.
MeatGrinder