As an artist - let me just say Pandora has produced a better listening experience for people who are fans of what I do. I've also had the tremendous pleasure of meeting some of the Pandora crew in person, and they'll bend over backwards for their customers.
I will send as many people to listen to stuff on Pandora as I can. When someone assumes I'm about to suggest Spotify they snarl a bit, and then are truly happy when I pull out the Pandora link.
We have a subscription in the family and one of my best friends does as well. They may not be as famous as some of the other options, but I'm truly happy this ecosystem exists and I'm happy to help it get bigger and better.
Artist here as "Jack Phantom and the Exquisite Corpse Cabaret" (jazz)