Fenix P2D CE presently but I see another Fenix product, the L1T V2.0, on the near horizon. The P2D CE is a real powerhouse for it's size but the need for CR123's leaves me concerned for "in a pinch" situations. The L1T V2.0 uses the most common battery available, AA. It also dispenses with what are in my opinion needless gimmick modes and provides true waterproofing vs. just "dunkable."