I had a chance to see both the VT60 and F8500 in a dimmed room at my local Magnolia store, and chose too go with the VT60 as a replacement for my VT50 due to the Samsung looking too much like its flagship LCD panel.
I placed both in there best viewing modes base on what the manufacturers stated to me, and as crazy as it may sound too some here the Samsung was just too bright for my tastes, I'm not a big fan of the LCD look, and the F8500 looked too much like an LCD.
I've had my VT60 for about a week now and couldn't be happier with the picture I see, even the 3D looks better than it did on the VT50.
Far better black levels when compared too even my old VT50, and beautifully neutral.
I'm glad I chose too go with the VT60 instead of paying the premium that the ZT60 commands, because as we now see the difference between the VT60 and ZT60 is practically imperceptible.
What it comes down too is this, if you cant control room lighting go with the F8500, I'm sure after a proper calibration it puts out a stunning picture.
If on the other hand your in a bat cave as I am, the better choice might be the VT60 series.
One other point I'd like too make is that Samsung's quality control issues were a big turn off for me, this is based on sales people Ive talked too and the many friends that have had there sets in the past.
What I found amusing was that whenever my Samsung owning friends would come over and watch a movie on the VT50 they'd always comment at how beautiful my picture was, my friend Larry ended up buying my old PZ850U and that sets black levels were horrible when compared too my new set.
If Samsung can dial there quality control issues in, I may switch my allegiance, hell I love everything else they make, especially there phones.
One more week of slides and she gets her first full calibration, I might even have Chad do it, do to his meter being far better than the Display3 Pro I have.
Again, this is nothing more than my opinion, so go easy on me guys.