Thanks, Fuzz!  I sure appreciate the info!  The fact that you're buying one makes me thing, hmmm - probably worth it.  Then again, you couldn't hold on to a nickel to save your life, whereas I hold on to them so tight that they'd turn into diamond if they were carbon.
I'm just not sure that I want to shell out that price premium for the 64".  Maybe I should just hold out for 4k to get better, maybe even early next year.  I haven't been paying much attention to TV specs.  Heck, I just bought mine about 5.5 years ago.  I kept my other one for 15 years.