Helmet Bluetooth Headsets?

hiya again guys and girls, decided on a satnav going for the Garmin Zumo 660LM and was wondering if anybody out there was using bluetooth headsets in your helmets and whats good whats bad as ive never used one before, would like to get one thats not too chunky and odd looking haha. any feeback would be good

[NTECUK]

Scala rider.
Tom tom often package it with the rider Sat nav.

is that a good headset then? easy enough to fit and what not ?

[NTECUK]

Easy fit easy to use big buttons .
Has a clamp with boommike headphones integrated .
You un hook the module if leving your lid unattended.and charging unit.
Different versions from phone audio &gps only up to full music streaming .
Ok to talk up to 60mph .
if you just want gpsinstructions get a £20/30 Sony Bluetooth headphones set. In ear type. But 3.5 mm jack so any set works.
Plus handy at home to listen to mp3 etc

ive got an interphone f4, from ebay some guy in italy does tehm, excellent uniot and great value for money now theyve brought out the f5, me and a buddy got one each, same features as a scala, but much cheaper, ive had mine 6 mth or so and get great battery life and it works when its supposed to so cant fault it

Also have the Scala rider with tomtom. the only thing i found was i had to put the speakers into the padding by my ears as they were too quiet behind the padding

I have a Scala Rider FM that integrates with my sat-nav and my phone and I can get fm radio on it too. It works very well up to pretty loud speeds. I've used the phone function at 90mph and my mate thought I was using hands free in my car.

I have both the Scala team set for rider to pillion and also the Scala G4 power set for bike to bike both able to accept gps and phone. Both really good bits of kit and depending on your helmet and hearing good anywhere between 60 - 80mph.