Regarding the Autocom over BT discussion.
I would like to throw my oil on the fire!
After the first (tester) intercom, which was good up to 30mph - no noise cancelling, we went with a portable Autocom kit. The boss had a little side bag which had the unit, and it worked perfectly. It was tested on speeds up to 100mph (not saying where or when but the statute of limitations has passed!) Time passed and due to disuse the unit stopped working. I had to stop riding for a number of years.
When I bought the 1200RT, it was decided to go with an intercom again. Sadly Autocom is not really represented in Belgium, also the GPS (BMW Navigator IV) does not have an audio output. The only way to get GPS & / or music is via Bluetooth so any Autocom unit would need a Bluetooth unit added. This would push the price up even further.
Based on reviews (and that it was upgradeable) I went with the Cardo ScalaRider G4. It spent almost the same amount of time at the dealer than on the helmet. When it was attached to helmet, I had no end of troubles with it. Music would cut out within 10-20 minutes of playing. Eventually we returned it.
I wanted to go back to wired, which meant either Autocom or Starcom, however I was persuaded by a UK BMW dealer that the Sena SMH10 was a better option.
Now 4/5 years on I am reasonably happy with the SMH10, although as with all battery systems the battery doesn't hold the charge as before. Only on a couple of occasions that I have lost chat / GPS due to the length of operation.
If I didn't need a Bluetooth module I probably would consider a wired option, although Autocom is now owned by Starcom and is still not particularly well represented in Belgium.
Of course with a 6½ year old RT I am not looking at adding anything to it, so any replacement is probably Bluetooth and with that I would go with Sena again!