I currently use a Firestick 4k. I mainly side load third party apps for streaming, no gaming. Amazon keeps installing apps on it that take up a lot of valuable space and cannot be uninstalled. Examples are Freetime and now IMDB. I will never use these apps and the space they take up affects the efficiency of my streams. That said, looking at the Nvidia Shield I don’t see much difference in them. I use the mute button a lot and the Shield doesn’t have one. They both have 8 gB of storage and 2 gB of RAM which in my opinion are the two biggest selling points of a streaming device. What’s so great about the Shield other than the fact that Amazon can’t randomly install stuff on it?