Not much.

I have 9 CEs at max level, 8 of them are level 100.

I have Honey Lake, Demonic Sun-Princess, Beautiful Dreamer, Royal Icing, Painting Summer, Hero on the Beach, Chilf of Atlas, Merry Sheep, Aerial Drive, Fondant au Chocolat, Sweet Crystal, Hero Elly's Adventure, Magical Girl of Sapphire, Hot Spring Under the Moon, Golden Sumo, A Fragment of 2030, GUDA-O, Another Ending, Maid in Halloween, Black Grail, Kaleidoscope, Limited/Zero Over, and finally Formal Craft. I'm currently working on Origin Bullet, which is at level 93 right now, and the next one will probably be Imaginary Element, to complete the trinity since I got my fifth copy this summer.