I am in the same boat as you.
I was going to buy the Sharp LE-70LE857 "top tier" model 70" but I found out that Sharp is known to have some pretty bad input lag, just recently when I found out what input lag was. I will do a lot of gaming on my tv in addition to sports. But seeing as I play NHL and COD, I need that lightning quick response. I wanted at least 70" but seeing as I found out there is no such thing as a fast input lag 70", I was quite bummed. Then I found Sony's W850A. 65" (which I am willing to settle for) so I think I will look for a good deal on black friday. $2,698 seems to be the best price for now, on Amazon, but I am hoping for a little cheaper. I know it's new so I'm not sure how good of deals they'll put on it even on black friday.
I WISH someone knew the exact milliseconds of input lag sharp's LE-70LE857 is.
But anyways, if you get it or decide on something else, let me know the outcome/review of the tv. I am interested to see what you go with as well.
Yes that does when you compare it to 18ms on the 850A sony panel. Lol, 3.2x slower. Im no expert so I don't even know if this would effect gaming but I love to game so I wouldn't want to chance it.
I was lucky enough to see the 65" F8000, 65" W850a and 55" W900 next to each other in a Future Shop here in Canada. I stood around playing with different content and settings for over an hour, and have to say that the W900's PQ is only marginally better than the W850, with the F8000 somewhere in between. It really is splitting hairs
Colour accuracy between the 850A and 900 is nearly identical, as they all use the same Triluminos technology. The F8000 colours did not impress me as much, even after playing around with settings.
Brightness/Contrast levels - all 3 indiscernible, to my eye.
Black levels - W900 and F8000 were incredible, nearly indiscernible difference; W850a is slightly lighter.
Overall PQ - according to my arbitrary rating scale, W900: 9.5/10; F8000: 9.3/10; W850A: 9.1/10
Applications/features - I am not a huge Smart TV user, using mainly just Netflix. The F8000 I hear is tops for this, but most of these features are a little redundant with the addition of a PS4 (who's menu navigation is practically instantaneous).
3D - not really my thing. If you're looking for balls-out gaming specs, then this feature should be lower priority.
Input lag (from database)
F8000: ~45 ms (Okay)
W900: 19 ms (Excellent)
W850A: 18 ms (Excellent)
Lowest retail price I've seen:
65" F8000: $3,000
65" W850A: $2,200
55" W900: $1,900
Based on what I saw, and read, if it's a 65" TV you want, I don't find any justification with paying an extra $800 for the Samsung.
Also, while the ZT60 plasma would also look absolutely spectacular hooked up to a PS4, it's still $45-5000 here in Canada.