Hey guys, I just purchased a TX-NR787 myself a few days ago...
Jeremy1234, funny part is I upgraded from a TX-SR608 myself...
On Sunday I picked up a Samsung NU8000 75" UHD TV to replace my Mitsubishi WD73C9 73" DLP with every intent on using the TX-SR608 via HDMI ARC with a FireTV Stick 4k being used to feed media in my home theater.
Well, as it turns out, Samsung decided to hamstring their entire 2018 lineup by pulling DTS as well as not allowing for bitstreaming passthrough via ARC or optical. So, I found myself in the hunt for a new receiver. I already had a 9.1 setup, so at first I looked at the TX-NR676 (because of the deep discount they are selling for) and I asked the local ATMOS guy at Best Buy if that receiver does 9.2 the way my 608 did (I configured the 608 for 7.2 with back surrounds and front highs on the Zone2 output for a full 9.2 configuration), and he stated that it is ATMOS so they must... WRONG! It only has 7.2 channels.
So, back went the TX-NR676 and I picked up the TX-NR787 for full 9.2 output.
Got home, hooked it up and for the first hour I fought to get the damn receiver to talk to the TV via CEC. I ended up having to reset both the TV and the receiver and unplugging the TVs HDMI 4 input (used for ARC) and then plugging it back in, having the TV try to detect the receiver, then go into the receivers setup menu and tell it to turn on HDMI CEC which causes the receiver to detect as well. Once I did that the TV saw the receiver (to verify it comes up as "AV Receiver" on the Samsung as well, vs the "Onkyo TX-SR608" name the other one comes up as) and the receiver saw the TV as well as my FireTV Stick 4k as "Player".
After that everything seemed to work just fine, as when I hit the home button the FireTV remote it switched to the STRM BOX input and when I switched the TV to Air Live TV it switched the receiver automatically to the TV input (I also configured ARC so I got audio for OTA broadcasts on the receiver).
Now, the one weird thing I noticed is if I use the FireTV Stick 4k remote to turn everything on, it all goes smoothly. If I have OTA broadcasts playing on the TV when I turn it on, again the TV and receiver turns on together. But if I have the FireTV configured as my last input, if I turn on the TV, the receiver does not turn on until I go to either a) turn the volume up or down or b) hit the home button on the FireTV remote.
I just find this behavior quite strange, since when I had the TX-SR608 configured into the mix CEC just flat out worked normal (turn anything on, all of it comes on, turn any component off, all of it goes off). Now I guess I can understand that Onkyo decided to allow the receiver to turn off independently of the TV because of their HDMI passthrough configuration, but I would hope they would have a way to shut that off (and if there is, I haven't been able to find that config yet).
Beyond the HDMI CEC funkiness I absolutely love both the TV and receiver. I know what most say about the auto-setup via mic that leaves the sub level way too low. I just end up halving the setup DB reduction and it seems to being it back to a reasonable level.
I also had a very strange thing happen in regards to connectivity, in that I originally set it up via wifi (since I needed to add a 5 port switch to support the new TV and receivers connectivity) and it updated via wifi and all was well. Once I added the 5 port switch I couldn't get the darn thing to be consistent via ethernet for connectivity. I switched cables, even switches to a known good one and still the same thing. Once I did a Clean reset and started over did it all of a sudden have rock solid ethernet connectivity, but I do find it really strange that it would flake out like it did after initially going wired.
In regards to the TV I am finding everything seems to work fine except for their "TV Plus" not finding any streaming channels.