Windshields are very subjective to the person using them.  The biggest tips for you are, you really want one that is fork mounted and not bar mounted. Also if your one that prefers the larger more complete coverage windshield you don't want it to sit any higher then about your nose at the absolute highest.  Remember on a MC you look over the windshield not through it.  Myself I have a Slip Streamer Enterprise II and it's a very large windshield. It blocks a whole lot of wind, but there are times that I wish I didn't have it on there, like when the temps are in the high 90's and getting into the triple digits.  I blocks that much wind.  Also with one that big it effectively neuters the vents on a full face helmet.  Here lately I find myself using my spare passengers 1/2 helmet instead because of that.  I guess I'm gonna have to go out and buy me a 3/4 helmet in the near future.

R.F.