I've got a Shoei RF 1100. I love it. It is light weight, has good visibility, and is very comfortable.
My only complaint is the wind noise. It is the only helmet I've ever owned, so I have nothing to compare it to, but it is deafening at freeway speeds. I have never heard anyone else complain about the noise of this helmet though, so maybe I have some misaligned vents or a weird shaped head. /shrug