Haven't been around for awhile. I have a 65" Sharp 65D93U from 2007. I bought the extended warranty and 2 weeks before it was to expired it developed a whine coming from the rear, like a hard drive sound. The strange thing was it only did this when the backlight was set from +2 to +7, I had it at 2 when I noticed it. Anything at 0 or below or above +8 the sound disappears. Tech came out, ordered 4 square things, have no idea what they were, but did not fix the problem. He said it would not get any worse and it hasn't. I just keep it at zero and all is well. His diagnosis was the panal was unfixable.
I had a choice of the entry level 70, or $2500 in cash. Holy crap, I paid $7500 for this in 2007. Well, I took the cash and got to keep the TV, they didn't want it, so cool. Even when it makes the whine if I turn up the backlight my friends could never hear it unless I turned the volume down and told everyone to shut-up. LOL
Now, the 632 or 844. I think I should wait until the 844 hits the street, and according to one site, thats in 8 days. I found it at one sight for 45**.58. It says backordered and no way to pre-order but who knows. I believe it may be vaporware pricing anyhow. I can't wait to get my 80", just can't decide which one. 3D could be a gimmick in a sense but it could be fun to play around with for the hell of it. Who knows, I may actually like it, as long as it does not degrade the panal otherwise.