4 12" sub ? The TV should be the least of your concerns. The vibration can make a BD disk jump out of the drawer! Just kidding...
If you want the big stuff, there is actually very few choices and the Mitsu 82" is the only game in town. I have a 73927 and ,IMO, bulb sucks. Many people here will tell you it doesn't dim and it lasts for more than 4000 hours. In my experience, first bulb died after only 900 hours and second one started to dim so badly that I had to replace it. That's not the worse, though : bulbs do get weaker after few hundred hours and you will need to recalibrate your set from time to time. Again, a lot of people will tell you the bulb remains as bright after 2000 hours as it was when brand new.
Having said that, there are strong reasons to consider the 82" Mitsubishi: It's realatively cheap, picture is good with HD movies, not the worst with SD , no burn in and a huge screen.
I am waiting for the Panasonic 65V10 and will replace my 73927 if I like it. I had problems with my Mitsu and my set had to be replaced twice because a bogus digital channel in my area was causing it to lock up. I know I will miss the size, though.
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