I have an old samsung smart tv (5 yrs) and it will not add youtube tv channel. I would like to stream youtube tv channel, but do not know which roku device will pickup youtube tv. Please answer if you stream youtube tv through roku. What specific roku do you use? Thank you.
Any of the current Roku models should be fine. If you need/want one with a wired network connection, the Ultra is your only option. Because I don't recommend the Express, I'd say any Premiere or Ultra version, as well as the Streaming Stick+. I wouldn't go any older than a 6th generation device, as described on this wiki page. And again, not any version of the Express.