I've got a photon fusion that I've custom mounted to the top of my helmet. They make a bicycle mount for it, but it's currently out of stock and I like having a light on my head anyway. That way I can point it where I want (in someone's face if needed). It has something 8 LED's so it's very bright and batteries a long time too. In high traffic areas i put it on strobe mode, and that really gets peoples attention. I also ride with a little cheapy bar mounted light in front, that I got off ebay for 6 bucks. It kinda sucks, and it's only a matter of time before the mounting hardware gives way, but it's nice to have two. The fusion comes with a head strap, but but having the light in the front of my head with nothing to balance is kinda crappy, also made my helmet fit funny. So I mounted it to the top of my helmet. I had to ruin the head strap thing, but *shrugs* I bought it for bike riding so....I also roll with a 7 LED blinky deal on my rear.

As for fog, I use some anti-fog stuff made by rain-x it's for cars (available at autozone type shops), but i put it on my riding sunglasses (have clear lenses from them...too) don't know about putting them on expensive perscription glasses but...there are lots of things out there, google anti fog, or check your local (good) eye glass store, my dad used to use this stuff that was kind of a mint green waxy type stuff, came in a jar and you apply with fingers, then whipe off.

any way, no ride today, having carbon fork put on my bike (older trek 2200 three tube carbon bike) finally decided to get the carbon where it matters :-)