A:Answer This has a VA panel. The 65 inch does have more dimming panels, but the 55 inch does a great job with the amount of dimming panels it has. The blacks are extremely black, and I have not personally noticed them dimming while watching TV.
I'm not sure if there are other TVs you have your eye on, but I just wrote a review of a major issue I am having with my Vizio. Research the Vizio freezing/crashing and restarting during input changing while using CEC. If CEC isn't a concern, then ignore that issue.