Yeah after my first two surefires I got the itch and bought two more in just a weeks time /ubbthreads/images/graemlins/smile.gif Now I have four 3P,6P,M2, and L1 plus have a BR-T coming from McGizmo. The "E-Series Modularity" as you put it is what I want. Would you suggest the E2e or go for the E2d?