Just some info out of all the bikes I've had none are as easy for up grades. Roughly 10 minutes give or take.
Haven't done air filter yet waiting until I get cruise control.
I used the OEM Honda shield for a couple of years. I helped a forum member install a F4 Customs shield on his bike and I really liked the quality and fact it could be cleaned with household chemicals. Wingstuff ran them on sale and I purchased an 18" smoked and vented shield which I really like.
Got the 12" Baggershield, tinted. I prefer to have my line of sight just over the top of the windshield. Blows the bugs over my head and still gets wind into the top vent on my Shoei. Haven't had to clean bugs of my face shield anymore. I ride on the stock seat and am 5' 11". Seat and body height should be considered when making your choice.