I hated to give up my plasma, especially since the 3-D was great. it is going to a new home with a good friend.
As for the new panel.... it is damned impressive. I only have one 4K disc (2001) but the standard blu ray upconversion is spectacular. As with plasma, the blacks are superb. I am...
Well... looks like I am going to take the leap. I will be picking up a Sony - 55" Class - OLED - A9G along with a Sony UBPX700 player on Saturday. And the 4K disc of 2001. There is absolutely nothing wrong with my 8 year old Panasonic Plasma. Here's hoping I will not be disappointed.
I have found a Panasonic UHD player which has two HDMI outputs which apparently is the perfect solution. One can go to the receiver and the other to the tv.
This is very preliminary thinking. I am considering an OLED 4K purchase maybe in another year.
Currently I have a Panasonic 50" Plasma which still looks great. My sound system uses a Yamaha HTR-3066 amplifier which is five or six years old. At the time it said it would pass an HDMI signal...