I've recently acquired an Apple TV and Roku Stick due to deals from Sling and DirecTV Now. I've been impressed by both and the amount of apps and channels offered by each. I'm a Shield owner, and it will remain my main box due to the emulation apps and PC game streaming, but I feel that for strictly streaming in 1080p, the Apple TV and Roku win. I'm a hardcore Android person, so that is a tough thing to say. I was curious if anyone else had had the same experience as me in regards to trying out the competition.
I have a Roku to stream Amazon Prime and a couple other channels. The UI is horrid. I always default to my Nexus Player unless I need to go to the Roku.