I had the very first Roku, many years back. They have continued to evolve and do so every day. I have several sticks and several 3's and am delighted with them all. I have also tried every streaming device out there and despite all their claims, I come back to Roku every time. They are simply the best.
This thing is great: it's inexpensive, simple to install and to use, and opens up a world of content not easily available. We hardly watch "normal" TV anymore. Terrific product.