none of these are full array LEDs
I have recently seen the 7500 and 8000 in person at a local Best Buy. They looked fantastic. The Sony HX850 has been better in some reviews that I have read and is likely to win out as the best LCD/LED TV of 2012. I have yet to get my eyes on the HX850 yet. The Sony replacement models for many of their TVs are supposed to be released November 10th of this year.
Wish I could help more, but this is all I have at this time. Unfortunately, the people that do have the definitive answers to these types of questions almost never chime in to help.
Good luck in your search.