I use the NiteRider 650 on my helmet as a secondary light. They are well built with good materials. It is a very solid mount. It has a flashing mode for daytime. Personally for me that's just not enough at night. I have a CygoLite Centauri on a handlebar mount. There is no doubt when I am coming down the road.

You didn't mention the traffic on your dark suburban roads. Are they busy? Deserted? Remember the light is to illuminate but also to be seen.