I've got a small TV near my machine (but at my back). It also has a VCR attached.(I'm dating myself -- but I have several tapes on heirloom sewing, etc and also old movies, which I love.) I put on a movie and when it's pinning, ripping, etc. time, I spin around and "watch" as I work. The rest of the time I listen.
I'm not savvy with the other two choices so I say get the TV.