I don't see Spec MJ at all. She was flirty, the life of the party, a bit of a glamour girl, not interested in "serious" relationships, but still had a good heart and cared about people. Plus, the acting thing.
Were we supposed to think of Michelle as the "cool girl?" Maybe in a "rebellious" "counter-culture" way, but I felt that was more supposed to be Liz in-universe.