Cheers Oldboy. I feel I'm due a bit of luck.
I recall your long and rocky road with a series of TVs, so I'm sure you understand my frustration.
As excited as I am by the F8500, I won't make a rash decision and I'll thoroughly audition before parting with more money.
On the buzzing front, others have said the same thing. The strange thing is, I can't hear it, even if I turn my laptop's volume way up. To be fair, my laptop's integrated speakers are awful, so perhaps this is why.
When I finally audition the F8500, I'll keep my ears and eyes open for buzzing and brightness pops.