I love my HDS lights and the man behind them offers outstanding customer service. An awesome combination. I carry one everyday. :thumbsup: In the larger two-cell form factor I like the older Surefires (6p's, C2's), although I realize Surefire makes single-cell lights too. Tough lights, you're able to mix and match the older Surefire parts, and experiment with drop-ins, also in the older models. To me they are comparable in build quality but I consider them totally separate in terms of comparison given the programmable aspects of the HDS lights, UI, target market, etc., therefore I don't consider one better than the other.