Just as great as the Roku 3 we still use in the family room. We wanted something smaller for our bedroom TV and the Stick filled the ticket. Since it plugs into the USB port on there is zero footprint, less clutter for our small space. Remote functions like the Roku 3.
I was using a combination of Chromecast and an older WDTV Live to play my media and the streaming services I used. This little device replaced them both, added better functionality and a lot more options for content to watch. I am very impressed and love the wireless remote (except for the "Blockbuster" and "M-GO" buttons) and not having to depend on my phone to stream to my TV.
The device feels a little slow at times, but it is still a better experience than what I was using prior to Roku and not enough to be a major issue. My other gripe is that it did not include an HDMI extension like my Chromecast did and you have to email support to receive one. It could be a problem if you are expecting to use this right out of the box only to find out once you get it, that your TV doesn't have enough clearance for your HDMI inputs.
I've only had this a month or so. Worked great in the beginning. Now a lot of times the remote doesn't seem to work. I've changed the batteries but it still has issues with working when it wants to.