Our favorites at MGM are: Rock N Roller Coaster and Tower of Terror. We sometimes go to The Great Movie Ride and Who wants to be a Millionaire (if we have time).
Fantasmic!
Beauty and the Beast
Great Movie Ride
Indiana Jones Epic Stunt Spectacular
Muppet Vision 3D
Rock 'n' Roller Coaster
Sounds Dangerous
Star Tours
Twilight Zone Tower of Terror
Voyage of the Little Mermaid
Who Wants to be a Millionaire
Thanks Phamton....remembering now. To answer the question now...I think I wouldn't skip Universal for MGM as there are too many rides and attractions that are nice to repeat in the same day....but I could skip MGM for Universal.