Yep when it comes to HD Audio the Shield is the undoubted king.
It has lots of cool extra features too.
When you pause a video the whole navigation screen takes up around 35-40% of the screen and stays there for around 3 seconds. No issue there, but when you resume the same thing happens for the same duration. So as long as you don’t have young children or anything else in your life to cause distractions you should be golden.
It also has a cool feature mentioned in these threads (being the major ones)
There are another 10-20 threads on the subject.
The remote rocks. I think someone at Nvidia sat down with the 10 worst remotes they could find. Picked the worst parts of each and came up with the Shield remote.
Picture quality is average assuming you wade through the plethora of settings and even then it’s nothing compared to PMP, any LG/Samsung smart TV app, ATV 4K etc…
But going back to the topic of the thread then go for the Shield.