Here is the big problem...
Once I swap out the ZT60 for the F8500 there is no going backwards.
If that F8500 has any problems or it doesn't look as good as the ZT60, I am basically screwed.
Of course, there's a chance it will be many times better than the ZT60.
It's not like I bought this display locally. I am going to be paying a fee to have the retailer swap out the displays (including setup).
There's quite a bit of chatter on the other forums about people having problems with the F8500. They include 3D crosstalk, 3D bright hot spots, panel buzzing and floating blacks. There's more similar complaints being posted daily. The only complaints I am reading about the ZT60 is that some of them arrived with cracked screens and some of them have fan noise.
Basically, my ZT60 is perfect. Not very happy with the overall light output of this display even in a totally darkened room. But, I am talking with a calibrator who has been known to be able to calibrate these sets brighter.
My gut still says that the F8500 has the sharper picture. However, many have also reported that the Samsung picture has more of a "soap opera" look to it wheras the ZT60 has a more softer, cinematic film-look to it. I prefer the cinema look.
Do I have time to hop on two trains to get to the retailer, unbox the Samsung at the store and go through it with a fine tooth-comb? Not really, but I may consider it. On the other hand, I may just say "F---it" and keep the ZT60 and get it calibrated brighter.
The grass is not always greener on the other side and I am not certain I want to cross that fence.