I'm with the majority.
Stock = excessive head thrashing.
Puig Racing = MUCH LESS buffeting.
If you tend to follow anything (too closely) larger than a mid-size car then it does not matter what you have for a windscreen... turbulence behind almost all vehicles will move your head.
On another note, what is the make/model of your helmet? A lot of helmets are the culprit all by themselves. We know it's not your height at this point. I am 5'10"
Personally, the Puig Racing is the BEST functional mod money I've spent. The stocker lasted for 2 weeks and that was only because the Puig took THAT long to get here!