I've always used Orange lens. Orange is often the color used in HD lens. Orange brings out what little light there is, which is perfect for night riding. However, it also, dulls out intense sunrays during the day. Amber Lens do this as well, but are darker so not quite so good for night riding. I guess it all depends on where you will be riding. If it is at a resort where there is lighting, orange or yellow would be your best bet. If you will be backcountry riding and the only source of light will be the moon, then I guess clear could most likely be best.
The disadvantage with clear though, is that for daytime riding, it doesn't factor out sunrays reflecting off the surface of the snow. This is why Orange and Yellow lens are the best overall. Orange and Yellow also give depth to flat, lightless surfaces so you can better judge distances.
Last edited by Prophecies; 10-07-2009 at 09:52 AM.