checkley73:
good price but it isn't an LED telly - Samsung have just been made to withdraw their advertising.
This is an LCD TV with LED back lighting, as long as you know, good price
Link to article on Cnet regarding ASA ruling
Cnet regarding ASA ruling
For a better explanation on LED tv's read
this article on Techradar
To be honest I think you are expecting OLED technology which is out there mainly in commercial applications but seriously expensive and not currently viable for the consumer market.
In my opinion LED backlit LCD screens are better than a standard lit LCD screens and are about the best bang for your cash without spending around 2K on a Pioneer Kuro plasma if you can still get one.
Price is good although I hadn't heard of Dell selling Tv's before, read up on AV forums to see what people on there think of them and advice on picture settings as the instore setups you see in big chain stores are often useless and not even HD.