Love them both, as others said, CW really picks up from the end of season 2 on,
Rebels on the whole for me isn't as good, but still has some amazing stuff in it. Thrawn, Mandalorian, good stuff on the force. Give them both a shot!
For me, cartoons in general aren't as binge "watchable" as some of my other favorite shows. And I love cartoons.
I'm currently going through CW pretty slowly with my 7 and 4 year old. It's a lot of fun!