I would choose to have the ability to be able to fly! I would choose to fly because if you are about to get into a fight or something like that you could just fly away. You could also leave school early if you just grabbed your bag and floated away secretly. What if you needed an extra boost to catch something? Just fly up and catch it. Long line? Just float over it secretly. Legs get tired when walking? Just fly for the time being.
I would probably just use this power to help me make some shots in basketball. Also I would use it if my legs got tired when I was walking. I really like the feeling of flying and being up high when I am at the amusement park. So this power would be good for me!
One thing that would be very bad would be if you were just flying up really high, just flying around, and then suddenly your powers stop working!! But at the last moment before impact they switch back on and you fall as gracefully as a piece of wood.
It would also be really cool to be invisible AND be flying! Just image how many lines you could skip!
What power would you guys choose and why?