Agreed. Solarforce L2 series hosts can accommodate a huge variety of P60 drop-ins, and are very cost-effective, in addition to being surprisingly well-built, for the price. They're modular, so parts can be easily interchanged between many of the L2 series hosts, and parts are easily replaced, if necessary (though I've never needed to, thus far). This is a favorite of mine: It's kind of a Frankenstein light. Surefire 6P body (bored for a 18550 battery), from Oveready; Solarforce A001 head with B6 stainless bezel, and S12 stainless switch. It's loaded with a 2-mode Sportac Nichia 219B neutral triple emitter. Beautiful tint, and nice, even flood of light. Another poster mentioned Malkoff. I have one of their drop-ins, and love it. They're built like tanks - very reliable, with fully-potted electronics. Malkoff M361 3-mode. 450 lumens, on max (?). Great combination spot/spill beam.