My Acebeam k30gt arrives tomorrow...I might have to return it and buy one of Vinh's.
It's definitely one of the more impressive lights to hit the market lately. It's kind of in a class all its own at the moment but I'm eager to see other small/medium SBT90 lights from other manufacturers. I'd love to see Olight make something similar, perhaps even shorter. Heck, I'd even like to see a 26650 based SBT90 light with a 40-45mm head. It would out throw all of the multi-emitter, optics-based lights out there today.
In any case, I think you'll love your new light!