I've owned maybe 6 or 8 helmets over the last 40 years, but I like the Davida Jet the best. Very quiet, especially with a bubble shield attached (even more-so than any full-face I've had). Also, on very cold mornings, there is less of a tendency for the shield to fog up, compared to the full-face helmet that I used to wear. Finally, I find that it's the only helmet I've ever had that I have purposely not kept in the garage. It's just too beautiful. I fondle that thing when I'm having my morning tea and watching TCM on the PVR, just like it was a Hasselblad or a Leica.
On a negative, it's leather lined, so it gets a tad hot in the summer. For the warmer days, I take the bubble off, and use Leon Jeantet goggles (they're specifically made for the Davida helmets). I don't do a lot of highway riding, so I don't have to worry about a June Bug ruining my day.
On another negative, the Davidas are fairly expensive.
I know; the open-face helmets are not nearly as safe as full-faces. And I should know better, since the only accident I've ever been in left a scar on my chin (even with a full-face). But I'm a shallow aesthete, and I'm not likely to change any time soon.