I'm a little bit claustraphobic so I hate full face helmets and always have, so I bought an open face helmet but I got sick of getting whacked by some pretty bodacious bugs (and we've got a Locust plague looming this summer, so the last thing I need is a face full of Locust guts) and almost lost an eye when a golf ball size rock hit me. Also, the aerodynamics of my open face lid caused my glasses to lift off my nose slightly, which is not good as they're multi-focals.
So I bought a Nolan N102 a few years ago and it is the best of both worlds, I can just flip up the front if I want to have something to eat or drink or a smoke or to get some additional air on the run, I can leave my helmet on when I walk into a gas station, and it's nice to be able to flip the front up in heavy stop/start traffic to get some extra air, particularly as it's summer here, and getting warmer. Oh, and the Nolan is made in Italy, which is nice as a lot of "affordable" helmets are made in China nowadays, and I wouldn't trust a crappy Chinese helmet on my beautiful Aussie head.
I still like open face helmets, but as I get older and less bullet-proof, I've noticed that just falling down hurts nowadays, so I tend to cover myself with protective clothing like I never did before when I was younger, and had far greater super powers. Cheers, Terry.