What movie is better UP ICE AGE 3 MONSTER VS Aliens?

This is a matter of personal opinion. Some people may prefer "Up" because of its heartwarming story and lovable characters, while others may prefer "Ice Age 3" for its exciting adventure and funny moments. "Monster vs. Aliens" may also have its fans who enjoy its quirky characters and colorful animation. Ultimately, the "better" movie is whichever one you personally enjoy the most.