For what it's worth, I had an OrcaTorch die on me and still no response from OrcaTorch. Back in Nov 2018, I ordered 2 D500+ lights, one for my buddy and one for myself. As of Jan 2020, my torch is essentially inoperable. It seems that the gold plating on the Positive terminal (at the light head) had somehow delaminated. The torch was never flooded, was always rinsed well after every dive, and cleaned and lubed before and after every dive trip. I emailed them a week ago and still no reply. The torches were purchased from a dealer in the US, but I (and the torches) are in Manila, so the dealer really cannot (understandably) do much... I have some leftover copper "shielding tape" with conductive adhesive (from shielding a guitar cavity), cut out a small disc and applied to the positive terminal with no change in functionality... At this point, it's hard to tell if the issue is with the LED, the magnetic switch, or the positive terminal... Since I have a replacement on the way (see below), I may try and open the light head to see if I can determine a cause of the failure.
Also of note, the D500+ is now discontinued, and seems to have had a very short production life... Maybe that's indicative of some issues with the light, or they just rolled it into a different model...I don't know... But I felt it worth mentioning.
Based on this thread, as well as a few other sources online, I'm going to try the Xtar D26 Whale. I will update when they arrive and get to dive 'em. Hopefully, this light will last longer....