I consider Princess Tutu the best magical girl show. It's been the best since I first saw it more than ten years ago and I doubt another show will top it. It's a hard one to top!

Magical Girl Rating
Cardcaptor Sakura (TV) Good
Full Moon o Sagashite (TV) Very good
Magic Knight Rayearth (TV) Very good
Magic Knight Rayearth 2 (TV 2) Good
Magical Girl Lyrical Nanoha (TV) Decent
Magical Girl Lyrical Nanoha A's (TV) Very good
Magical Girl Raising Project (TV) Good
Petite Princess Yucie (TV) Good
Pretear (TV) Decent
Princess Tutu (TV) Excellent
Puella Magi Madoka Magica (TV) Excellent
Sailor Moon (TV) Very good
Sailor Moon R (TV) Good
Sailor Moon S (TV) Good
Sailor Moon Sailor Stars (TV) Very good
Saint Tail (TV) Decent