Since my girlfriend commutes to work on a strip of PCH that gets very windy, I think a windscreen is a partial solution for her. Talking to the mechanic who changed out some parts on our new Like 200i today, I was told differently. He said that it would slow the bike down by about 5 mph. However, my limited knowledge of physics tells me otherwise. If there is a an object that deflects air pressure/wind current up and over the rider, would it not help the speed by improving aerodynamics? I might be a total noob here, but I think I still possess a bit of common sense. someone please correct me if I am wrong.
BTW, I am leaning towards the Puig windscreen, as I think it looks better overall and seems to be quality made. I really like the pics that captainscott has posted.