I have 5 Surefire lights and one spare bezel all now wearing black Xenoled bezel rings. Why? Well, I always found that the plastic lens retaining rings used by Surefire looked cheap and allowed fluff and debris to get between the edge of the bezel ring and the bezel itself which looks awful. In addition I've found that chips and dents to the bezel always seem to occur right on the edges which quickly ruins the lights aesthetics. Whilst, I've yet to put it to the test I suspect that there 'might' be some advantage in having a SS ring which covers the bezel edge if dropped. I also just really like how the bezel rings improve the look of the Nitrolon bezels on my G2's and G2z. Presumably lots of you guys like these bezel rings as they are often seen on pimped lights.