The road noise is vastly improved on both models. You will likely have even less on the hybrid model.
The noise cancellation quality of my '11 G37x bluetooth is so terrible that I often times don't even bother to use it unless I park my car on the side of the road with the windows up . As others have stated, road noise is noticeably improved in the Q50, and while I did not get a chance to test call quality, I'm convinced the bluetooth quality will be much better.Responding to my own post
I was hoping someone else here talks on their Bluetooth (which has been marginal at best on all my other infinities) it would be one more reason to order a H if Bluetooth notice would be reduced