Well I sold enough of my old bits and bobs on eBay to give me some cash in my paypal account and finally upgraded my C3 Pro with this integrated bluetooth system and am blown away. Sound quality is so good that I kept my lid on all the way through locking the bike up and getting back to the flat (4th floor) - won't say what I was listening to, but hopefully no one saw me busting grooves with a helmet on! It's a little bulkier and doesn't slip on quite as easily, but what an amazing setup - can totally understand the price tag now. Obviously with great technological power comes greater responsibility - especially when riding in traffic, but I'm really happy with it.