Shark speed R. Absolutely brilliant on a naked bike like the MT.
Had an agv dual sport with a peak on it before that (ax8 evo, maybe? It had some kinda stupid name like that) that was pretty good, peak was okay to about 110kph, and worth it heading into the sun.
I have a k4 Evo AGV helmet for the fz and a speed and strength dual sport helmet for my sumo. I used my sumo helmet once on the Honda and the air just bites at the visor and pulls your head up at anything above 70 mph.