The KTM touring wind screen works well.  But it would depend on your height.  I'm 5'7".  I start to feel the wind really push on me at about 80mph, but don't get any significant lift or buffetting on my Arai XD-4 helmet.  My usual highway cruising speed is 70-75 mph.  I've seen other posts of folks mounting wind screens which would look at home on a cruiser not a dual sport (really ugly) and probably work like you are sitting behind the windshield of convertible car.  The Lynx R fairing by www.britanniacomposites.com is one I'm considering.  It also gives the option to improve the head light and doesn't look out of place.

Wind? Riding a 690 down the freeway at +80mph is like the shuttle re entering earths atmosphere. It's a give and take situation. Up to about 70mph, ain't no thang. Beyond that, it's a losing situation as far as comfort goes. That's why I don't push it unless it's necessary. It's a dirt bike on the freeway, whatt'd ya think, u were driving a Cadillac? And yeah, those taller rally style windshields are gross. 😝

I can also vouch for the KTM windscreen, it is the cheapest at about $65 US and does a good job; it also is small enough to stay out of the way offroad.  Before I had the windshield riding at speed at 20F was no fun at all!  Cold wind right to the chest.  http://www.ktm-parts.com/AOMC/product/76508065000?gclid=Cj0KEQjwuqauBRDhnfvnxMvKy6UBEiQAmTLQu3FGwTbM4r2P0d08FSSj7AygK_q4S-NZou7MNoDyVmYaAsJz8P8HAQ