Looking for a small light for the road bike, its not required to see, just be very visible in poor weather. A front version of the Smart 2 * 1/2 watt rear would be ideal.

Well I a light that is visible will allow to you see. A light that will not let you see in the dark will not be visible at a distance. Rear lights are different as they are emmitting that 1/2 Watt of power at one wavelength -red which stands out from everything else and is visible at a distance.

I would say the BBB BLS 62 or 62 is a good choice. 1.5W or 2W LED and they are £40 or at least thats what I sell them for. The light is easily mounted and very good. Needs rechargaable batteries though to replace the AAA supplied.