For those with GPS or GPS experience: I have a Nolan N102, great helmet but the Bluetooth and headset additional cost is ridiculous. Has anyone experience with using a standard Bluetooth ear piece or something like the Motorokr stereo Bluetooth? The Cardo bluetooth that came with my TomTom won't work physically with my Nolan. I also have a cellphone with BT finally. BTW: for people with buffeting problems the Nolan N102 eliminated buffeting for me, besides the skirt on the bottom cuts out a lot of wind noise that was a problem with my KBC. suggestions? alternatives? Cheers!