N.D.
We love Gymboree.
My Gym is more gymnastics/activity centered, where they have stuff for kids to climb, walk, etc on. My daughter didn't like the lack of variety they had there.
Gymboree has more variety -- songs, free play, bubble time, parachute time, creative play, as well as things to climb and jump on. The teacher is awesome - at the Old Orchard Location in Skokie. Her name is Becky.