Cateye has an interesting selection of lights, you could also get a Cateye EL320 tht puts out 1000 candle watts, use this in flash mode and it's really extreme, you can also use it as a back up light if your main should die on a ride. see: http://www.amazon.com/Cateye-HL-EL32.../dp/B000R5PJT0

I use an old, 18 year old Vista Xenon flasher that came with two lens, red and amber. I used it originally for a tail light but then brighter ones came so I took the red lens off and put the amber one on and that thing gets peoples attention. I think the newer stuff today is brighter then my flasher, but the darn thing won't break so why replace it? Beside I have a Cygolite MityCross 480 for a main, the flasher just grabs their attention.