B&W is actually just a few miles from me and they have been exceedingly helpful and prompt in repairs (a few days). To recone the tweeter is only around $150 but to replace a pair of tweeters is around $1200. The parts for the Silver Sigs are exceedingly expensive since the drivers were only ever used in 2 limited production models and you have to replace the entire housing for the tweeter. I have owned many B&W top of the line products and have never had a problem with any drivers. In terms of dealer support, you are absolutely correct. By the time I bought the Signature 30s, they were already out of production and my dealer had sold his last pair so I went to the used market. My dealer still tries to help where he can but since I am not the original owner, I have to pay to get everything fixed.