I've had it for about a year and a half. Original owner upgraded to the blue Flourosilicone o-rings and blue button switch. I sent it to Vinh and had a 4000k XM-L2 and DriverVN2 installed. It has an excellent tint, great balance of flood and throw (although still super floody), more light, and a better UI (IMO).
I've had this light longer than any other light so far: