We bought this a little over a month ago and are berry happy with the product and choices of streaming. We do not miss cable or the expensive charges for cable services.
The unit itself works fine and has great speed in loading Roku and apps. But the remote has a terrible layout with the mute and volume bottoms on the right side. With the Return button on the upper left, your right hand has to shift up to reach that button, and you hit the mute button every time. If you are left handed, then no problem.
When Netflix dropped their support for older Samsung Smart TVs, I was desperate. Went on-line, and found an overwhelming number of comments to the effect that ROKU was more than good replacement, but would provide an all-around superior viewing experience. And is it! I just wish I had installed ROKU years ago! Couldn't be more satisfied!