If you go to the Rocky Horror Picture Show (the live version, not the movie), you can use a BRIGHT flashlight during part of the show. I brought a specially-made 5W cyan LS in a SureFire Centurion C2 with turbohead, and I definitely had the brightest flashlight in the entire theatre. Looked like a light sabre from Star Wars, especially when compared with those whimpy, yellow, ringy beamed incandescents that everyone else had.
As for the two lights you got, I'm not sure which is brighter - a SureFire E1e or a Streamlight 1L Twin Task, because those are two lights I do not have.