Excellent and inexpensive from dealextreme. Start with a boggo, 250 lumens, WF501B, SKU 16240 $13.01, plus a 26.5mm aluminium reflector, SKU5955 $2.76, then a 28mm aspheric lens, SKU5297 $1.92 Unscrew the top off the torch, wind out the lens retention ring with a pair of pointed tweezers or needle nose pliers and replace the lens, unscrew the reflector from the LED and spring and replace it with the new one and reassemble. If you paint the reflector black this reduces the spill rings, but they are thin and few anyway (you could argue that if you're going to paint it black, why change the orig