I have a Roku SE and a Fire TV Stick with some annoying differences. IMHO the Roku has a much better interface, but it is slow. The Fire TV Stick is zippy, but the interface is inferior and the remote has few buttons. On the PBS app, just this afternoon I was trying to watch the last NOVA 2 hr episode, and the darn thing won't let me fast forward! I went to the Roku and it fast forwards just fine. Also, on the NBC News app, the Fire TV Stick shows me a commercial between every news segment. This never happens on my Roku which will show me several segments before injecting another ad. Am I doing something wrong? Is that just the way it is with these devices?