I've been keeping an eye on this thread with interest as I also plan to build my own light (3 Cree Q5 LED's). However, my experience with electronics is dangerous so I compensate for that with research. At the moment I'm a bit stuck on the driver. bflex seems the way to go but the taskLED website is down and Cutter is quite expensive. It seems the Buckpuck driver will also work (am I correct?) but which model do I go for? Is this the correct one: "3021-D-I-1000"? I appreciate all input!