my pennys worth, beware I find if it's to dark you can't see in the shadows,
riding just becomes a game of roulette as you can't see the road surface when you go though the trees shadows ect, and with the roads the way they are I think is dangerous, ps I do have a iridium one which is just right but I have had ones thats to dark,
and that realy slows you down, reading the road is what it's about.
dont hate me, just keep it in mind.