Found what I'm looking for

I called some of the better known TV companies and visited a couple of stores and found that there IS, in fact, availability of what I am looking for. Any Samsung tv 1080P 120hz and above dims down very low and maintains a great picture. If anyone else is in a similar situation, it might be helpful for you to know about this. I don't know about larger tv's, but in the 40" to 50" range, Samsung seemed to be the best. Cheers!