I had both......now I only have the P2D CE. The P1D is ok as a twistie only if the thread is nice and tight, if not, you will be changing levels accidentally and this can be frustrating, for me it is, sorry, it was too small. I prefer clicky switch to twisty.......and now I can get spare Fenix bodies with tailcaps for my P2D, such as L1D and L2D........only my opinion.