AJ...there is a thread in the Ultra section on this now. But, to add my 2 cents worth, and agree with what Don has already said, the Nolan N102 with the best headset, appropriate cord to interface their headset to your bikes output jack on the console (and passenger on the tourpak), is the best way to go at this point in time, IMO. If you want phone service while riding, get the Bluetooth module for the HD radio...from what I've heard from reading, they work just fine...then you are totally wired into your bikes entire system, can listen to tunes through the helmet speakers if you want, and talk on the phone or to the passenger at will. You have two things going for you in doing this...one is that the Nolan N102 is probably the nicest, most comfortable helmet I've ever had on my head, and my passenger feels the same way: convenient to use with one handed flip feature, well ventilated, face shield works great, and we both even like the sun visor part of the helmet, though it depends on where your eyes are set on your face/head (Don did not like that part on his)...if you don't it's easily removed within a couple of minutes. The removable chin flap keeps you warm in cool weather. The buckle mechanism is by far the best quick release I've seen on a helmet. Two: you will have a speaker system in the helmet FAR superior to the HD unit...it ain't a Bose Headset, so don't over-expect, but compared to anything else of it's kind, it's just simply better. The VOX works better. Running the tunes through the helmet allows you to both have seperate volume controls, so if the wife wants to nap on the back of the bike, she can mute her music via the tourpak controls.
Basically, there is no down side, if the helmet fits the shape of your head.
I may wear my shorty for short rides to the local pub or something, but any other time, the Nolan will be on my head.
One more side benefit...the "pigtail" for the J&M speakers is much, much easier to hook up to their cord than fumbling about with trying to plug the HD unit into the side of your helmet blindly.
Like Don says, in a couple of years all this stuff is going to change, but it will be with the next generation of audio systems for bikes. For now, this is as good as it gets, at least for me.