I'm looking at a Trail Tech 13w HID with Li-ion battery and a smart charger for $280 delivered. That's 5.5 hours (advertised) run time. Repair and replacement parts seem reasonable, especially when compared to the $100 each Cygolite wants to replace the lamp and/or ballast of the HID I bought from (a light that lasted less than a year and a half).

What's the catch? Was I just stupid to have bought a Cygolite? Are Niterider HID buyers similarly stupid?

Also, if you think it's a good light, would you recommend the 6 degree spot or 12 degree flood? I mainly do urban riding, with some early-morning MUP riding. I'm also concerned about visibility in low-light conditions, like rain.

Edit: Another light on the page is even less for what appears to be the same quality. What makes these lights so much less expensive? Just a lack of a promotion budget and LBS mark up?

Thanks!