I will biastly say Sasquatch. I have never had as much fun at any concert as I do at Sasquatch every single year. Lineup is really good, venue is the best around, and the environment is very laid back.
I really dont mean to sound rude but please do us all (including you and your kids) a favor and dont bring them. I would never tell others how to parent but its a poor idea to have kids in this environment. I understand why you would ask, especially since your little one is only 2 years old and being away from them for a few days would be tough. But again, please leave them at home, they won't have any fun and neither will you.
the headliners are def better but i feel like the lineup ends right there. With Sasquatch I can get an entire day and night of good music and variety, at Pemberton I could only get it with the headliners