Klock Werks makes a great curved shield at 6.5" and it comes clear and smoked, Great product and great guys to deal with,
 \\; www.kustombaggers.com
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I am 6'2" and have a Klockwerks windshield. \\; I can now wear a hat and not have it blown off. \\; Also when wearing my helmet, the wind no longer catches under the visor (pulling the helmet up, causing neck strain). \\; I tried the standard 6 1/2" shield, \\;but like the Klockwerks better. Save some bucks &\\; install it yourself.
I'm going with the Klock Werks also. I always wear a full face helmet so wind isn't a problem. I just like the way it looks. Adds 15 pounds of down force to the front end. Really supposed to help handling!