I'd recommend:
Aberrant
Heroes Unlimited
And The original DC Heroes RPG.
I meant to mention Aberrant!
As for the others, both still have a bit of kitchen sink. DC Heroes does because, well, it's built on DC comics and tries to cover the bases.
Heroes Unlimited does as well, though to a lesser extent: the power origin categories (as I recall) were aliens, training, gadgeteering, science, robotics, and mutants, but the way they handled power selection and power level seemed to generate fewer Über PCs.
Changoo, what, exactly is your goal?