There's a red LED flashlight on DealExtreme but it does take 18650 LiIon batteries, so you're getting into that whole world of special batteries and chargers.

Personally I use the 140L with NiMH rechargables. Spare battery holders are < $2 at Radio Shack, I keep a spare in my bag loaded with low-self-discharge cells so I don't have to worry about keeping them topped up all the time.

You do have to take the pack off the bike and inside to dry it if it gets wet during a ride, if you don't the pack will start behaving weird (cutting in and out a lot). Apart from that I haven't had any trouble with mine after more than a year, and it's kind of the gold standard. No generic red flashlight is going to have the great bike-specific strobe modes that the Dinotte has.