I just installed a deflector thingy on my Puig windshield. I paid about $25 for it on Ebay. The deflector adds a little height to the windshield (or more, depending on how you adjust it), and it made a substantial improvement on helmet buffeting & helmet wind noise.
But that's not to say you won't get wind noise on a cross wind, so don't throw away your earplugs just yet.
18 1000 XT yellow. Bunch of goodies installed.
2015 Yamaha WR250F- Street plated woods bike
Previous rides- about 25 different bikes, mostly dirtbikes.