Hi Garth, I noticed from another thread that you also made a DIY headset with Bluetooth intercom. How does the TuffTalk compare with that? I can see two problems with the TuffTalk: 1. I can't find anywhere to buy them in the UK! The UK Sena website don't list them, Amazon is out of stock. Where did you get yours? 2. PTT is on the side of the head, right? How does that work in practice while driving, having to take your hand off the wheel? More generally, I'd like to hear from someone with experience of using a boom mic in a Seven with an aeroscreen. Do they work at full-on blatting speed? Jason.