When I first got my S10 ('14, base) I got a far amount of buffeting off the stock screen, a Parabellum Tall solved that (6'2", long torso). I still get more wind noise at freeway speed than I would like, then again I'm coming off an ST1300 which had a pocket of dead air so large with the screen fully up (electric, 'miss that) that I'm pretty sure I could have smoked a cigar back there w/o any problem. I tried the side deflectors which may have helped, a little, but I still get wind noise. Oddly, from moving my hand around it appears to be coming from the sides on the upper half of the screen. Then again, that may have something to do with my pumpkin-head, 3XL full-face Neotec being pretty damn wide too....
I may have to try some of the wider-at-the-top variants I guess. I doubt I'm going to get to ST levels but I'd like to see if I can get it a bit quieter back there & width seems to be the issue.