I'll add another light to consider. I already had NiMh AA rechargeables, so I got the light without batteries for $150, free shipping. I posted this in another lights thread:
Originally Posted by chipcom
I just got a Dinotte 200L that uses AA rechargables. It lights up the road enough to ride 20 mph. Completely dark roads are easy, your eyes adapt to the dark and the light seems very bright. Alternating patches of street lights and dark sections are harder to see in.
The light shows the whole lane, but I can't turn onto a side street at a fast speed, because it doesn't light up enough of an angle away from the beam. I'm going to get a spotlight for my helmet, right now I'm using a $10 Lowes LED headlamp. I want one a bit lighter weight or with longer runtime.
With the Dinotte, I got over 2 hours of runtime with 2500mAh batteries on high beam. And the light comes with an extra battery holder, so it's easy to bring a second set. The battery pouch (2 1/2 in long by 1 3/8 in square) is strapped to the stem. I picked this light because I can replace the batteries cheaply and carry a spare, the o-ring mount is really easy to attach and is stable, and the whole thing is small and lightweight.