I currently have a Roku box that I have been very happy with ( it is stable, never missed a beat, nice user interface ), but will not do 4k HDR. So I am looking for a replacement that will make the best of the new 4k/HDR/Doulby Vision TV.

Not particularly bothered about watching knock-off TV online, not interested in sports. Mostly I use Netflix/Plex.

Is there anything else I should consider streaming stick-wise, other than the latest Roku ?

Usual suspects are FireTV 4k and Chromecast Ultra but as a Plex user the Chromecast won’t be as good and as a non Amazon user the FireTV won’t be as good.

I’d stick with the Roku.