Funny you should ask that... I really don't know. For the past 7 months or so I EDC'd a dual mode Surefire E2L. Having just sold that, I can choose from a Nitecore D10, Ra Twisty, Bitz, Surefire 6P, or single level Surefire E2DL. Yesterday, I carried the D10. Day before that, it was the Twisty. Today I carried the D10 for half the day and my Bitz was waiting for me when I got home. Decisions, decisions...