well, there is a question in regards to super speed and flight:
if you choose flight over superspeed, would you not be able to fly at super speed?
and secondly, being able to both fly and move at superspeed aren't nearly as much fun if your body doesn't have some sort of adaptation that will protect your body from getting ripped apart, crap flying in your face and blinding you, extreme temperatures, friction, abilty to breathe at high speeds and high altitudes -adaptations that would qualify as superstrength and/or invulnerability
the sensory (X-Ray, superhearing) and offensive (breathe, heat vision) powers are fun, but they easily take a second seat to something like superspeed