I have Youtube TV. In past years I've had Sling and I've had just the cable company version of streaming. I'd say Youtube TV is better than the cable company version and about as good as Sling. That said, I don't think any of them are that great.
10-15 years ago, before digital cable, when everyone had analog cable, you could watch three different football games at once. When you pressed the button on the remote, it went instantly to the other channel. Then digital cable came along and it took a second or two to go to the other channel. Now, with the streaming services, it takes several seconds. Maybe I'm missing something but this seems way worse to me. Maybe the picture is better, I don't know.