I needed to use Quato's iColor Display software package to get a good calibration of my Dell U4210 and i1 display 2. It has fixes for various wide gamut types.
Hey mate, you might want to try the danish review site Flat Panels DK. They have an up to date english version, and use a Lacie colorimeter to determine panel quality/characteristics.
http://www.flatpanelshd.com/
They liked the new Panasonic G20 Plasma...
flatpanels.dk has a full review up now (in Danish):
http://translate.google.co.uk/translate?u=http%3A%2F%2Fwww.flatpanels.dk%2Ftest.php%3Fsubaction%3Dshowfull%26id%3D1253521464&sl=da&tl=en&hl=en&ie=UTF-8