My favorite Roku device so far is the Roku Express 4K+ 3941R (2021). It has enough storage to keep a lot of channels loaded (vs requiring a reload at each use), which some older versions didn't, and it is fast enough to use without annoying delays. I got several for $23.74 when on sale at Target, and paying with my Target Red Card. Unfortunately, it doesn't appear to be on sale this week, but check again starting next Sunday.