memphis shades 17in slim for me. just enough protection year round and I add hand guards in the winter.
I find that a fairing offers too much protection and looks well... less than desirable. I also have found I get the best mileage with no windshield at all. I've gotten 48.5mpg with no windshield, I think 45 is the best I've ever got with it on. I've been getting 34-36mpg with the winter grade gas, windshield, hand guards, pipes, tuner, and some warm up time before I ride to work when its been cold. So also mostly city driving, hopefully my new tune I made will up the MPG by 1 or 2.