Just received my D25C Clicky! This is my first EagleTac light. Build quality seems pretty good, although the threads seem a bit rough. Going to clean them up and put a bit of lube on them when I get home from work later today and see if it helps. Aside from that, build quality seems good- about what you would expect for a flashlight. Kind of weird getting used to the reverse clicky. I bought the D25C with an EagleTac 16340, but I don't have my charger on me, so I can't test the voltage and see if it's fully charged, so I don't want to mess with it yet. For now, I just stuck a CR123A in, but have yet to have a chance to play with it.