I wanted Bluetooth in my helmet so that I can listen to tunes and take the (rare) phone call when riding. I have a Harley-Davidson helmet, and this worked for me, FWIW. I would be interested in what others are using. Here is my review of the Sena unit on Amazon.com:

http://www.amazon.com/review/R34V76L...cm_cr_rdp_perm

 

I rode with the Vemar Jiano modular full face with Bluetooth. Streamed my music on the longer rides. It had the added benefit of being ECE rated. I firmly believe that helmet saved my life and will be buying another one when I get back up.

 

I have one of the cyclegear Bilt brand modular helmets with bluetooth. Bought it when they had them half off sale this year. Had the button that lifts the chin guard fall off this week while riding.

 

Iceman, Glad to hear your healing continues to progress and that getting back on is in your future. Life is attitude. Good on you...

 

I have this very unit. I just got it for christmas for the whole family. Works great.
Why did you have to upgrade the firm ware and where did you get the upgrade?

 

You go to Sena's website.

I always keep my firmware up to date. It worked fine with the older firmware it was shipped with.

My iPhone interfaces perfectly with the Sena Unit.

Hopefully my Garmin (M/C version) will too; I am confident that it will.