Super speed because it is more versatile than teleportation, less eye-catching than healing, way cooler than elasticity, more fun to use than precognition which takes the joy out of life, makes you crazy or any other number of annoying side-effects and I just don't really like terrakinesis. Super-speed can help you in daily life way more than teleportation could so yeah you could go into e sports or the Olympics or something with it as long as you hold back a bit while you have to hide that you have teleportation.
Remember super speed includes fast reflexes and probably a lot of athletic skill as well as some other stuff I can't think of. Always preferred speed to end a fight with one kick to the balls rather than strength that would keep missing or accidentally kill someone.