They are just fine for technical dives,I have one as a backup for my lm35w. We've had 2 of dusty lights well past 200 feet.Mike, how deep are your dives? Dusty's lights aren't designed for technical applications. They're super lights for recreational divers, but they are inexpensive for a reason.
The only thing I dislike, is the Goodman handle, which I replaced. For a budget Tec light, it's tough to beat with the lithium pack and 5 hours runtime. I prefer my 35w hid, but I'd have no qualms using dustys light on any Tec dive, and have already while my hid was being upgraded.