I see that there are a lot of Spyder-owners who have replaced their stock windshield with larger unit. I am debating whether to do this. Seeing so many owners have done this, it tells me that a lot of people must have thought there was a valid reason to go with the larger windshield. However, I am not certain if it is really needed and I would like to hear your opinions. I am about 5'11" tall. When I ride at at about 45mph, I really don't feel too much wind on my chest or in my face. While riding, if I put my hand about 5 or 6 inches above my helmet, I really feel the wind. I can move my hand around in a circle around and see where there is a lot of wind turbulence and where there is less. So, it appears the stock windshield is doing its job--diverting the air over my head or around me. I do feel some wind in my abdomen area, but not nearly as much as above my head. Am I missing something? I don't have risers on my Spyder--is there more turbulence with the higher posture? I appreciate your comments.