Are you still looking for one of these? I have 4, and don't use all of them. I have one with the lowest low, i.e what Eric called a 30ma drive to the Luxeon. It only draws around 120 or 130ma from the battery on low. It also has the highest high (1.5W).
I believe I have tucked away another one with a 3/4W high x 60ma low, but I believe the low is actually a bit lower than was advertised, as I have some with the 60ma low drive that draw 220ma from the battery, and this particular 3/4W x 60ma drive low only draws around 170ma from the battery. I would be willing to sell either of these for $65.
Let me know.