My wife and I decided to pre-order an Amazon Fire TV Stick for her parents, which we gave to them for Christmas. While visiting with them I had the opportunity to setup the device and use it for an extended period. Overall, I’m impressed. The cost is relatively low, performance and stability seemed good (at least during the time I was using it) and the interface was easy to use.
We were both impressed enough that we decided to order one for ourselves, though they’re currently on back-order so it may not be until the end of January before ours ships to us. I was able to pre-order the Stick for my in-laws for $19, but it regularly retails for only $39.