Ghehe pretty much marketing numbers, testers tend to get a bit lower scores on contrast ratio etc. But anything above 5000:1 is all good. If you have an opportunity to take a look on flat screens side by side on some store maybe youll see the difference but I couldnt, I just chose the cheaper one 😀
If I was about to get a screen now I probably would go on Samsung/Asus 27″ and the price tag would be around 300euros/250£…