Helm laws for adults are retarded, only eye protection
should be mandatory, so one can see perfectly at all times
(watery eyes cause of speed/dust). Other than that let the
Darwin awards contenders roll!
I always have owned/wear a full face, you know,
cause of the whole jaw/nose-reconstruction surgery thingy,
just in case, you know. Oh and cause of big bugs @ 65mph
...splat.Speaking of the best of both worlds...
I Just bought me a Nolan Air convertible ("6 in 1") on sale for $100!! (euros)
(amazing visibility & overall a great summer helm, only 3lbs light!
yeah, it's but a bit loud at high speeds cause of the vents but whatever).

Also have a closed HJC for winter that is much more quiet and warm.
Best I've ever had was a BELL full face, sold it along with my savage, sniff.
and here it is, once again, the world famous
god-knows-where-the-data-really-came-from
internet-helm-accident-%-chart, yay!

...oh btw, ppl, wear a kidneybelt, cheap and keeps your insides inside.