Anybody purchased or used a Roku streaming stick 4K ? Thinking about getting one . Thanks

It's for our non-smart Sony TV which is about 10 years old but awesome picture and never any problems , just thought I'd turn into a smart TV , Roku stick was suggested by one of my long time customers .
As long as the TV has an HDMI port then it's a good option. I recently bought a small 32" Roku TV for our workout room. It works great. Keep in mind it's not like you're used to with traditional cable/satellite service. When you turn on the TV and the stick, you'll have to select what you want to watch, instead of having the cable/satellite programming already showing.