Sorry if this is basic, but what is a TN panel? I'm assuming that it is bad? Thanks.
Goto the following link to get some good info on panel tech.http://www.tftcentral.co.uk/specs.htm
Also read the section called Color Depth
All TN panels are 6-bit panels.
FYI: All 22" LCDs use 6-bit TN panels.
6-bit TN panels are preferred by gamers because of the response times (the low price helps too). But they have plenty of drawbacks as well. Too many for me to consider buying one.