I picked up the ABS-10 last night at the LBS that I really like. At USD 65, I think it was quite a good deal.

The HL-500II sold here comes with 2 6W AA powered lights and a lead acid battery. I couldn't find any info on it on the web. I think it's an old model, and besides the people who work at that shop are really rude. The guy working didn't even want to let me look at the lights. You can look at them from across the counter was the attitude. I'll never go back to that shop again. I even plunked down USD 45 on a rack the day before!

If anyone is interested I'll post some info on battery life over the next week. Just let me know if you care!