I owned two Surefire lights so far: a Maximus that I had bought in 2012 and a Titan Plus in 2016. The former is now a paper weight with a dead battery. The latter, however, is still my favorite EDC light. The last time I lost it (three similar losses so far), I examined newer alternatives but I couldn't find one that I would prefer. Fortunately, I found it again, just before buying a new Titan Plus. I cannot comment about Surefire in general but for me, the Titan Plus is still the best in its category. I don't use it as a keychain light, though. It is too heavy for this but IMO, just the perfect weight; size and performance for pocket carry.