I like the factory's two smaller windshield as it looks more racy plus it kicks the wind over my head while driving so I can wear a baseball cap or even a fedora.
the large windshield would be better in a rainy climate and better for a ladies hair!
JV Sclafani Boca Raton, FL '13 M3W Metallic Orange Pearl 128CI Steered by Empire - Riding on Ohlins