Don't over think it too much. Like I said earlier, Jim himself said you could have different tweeters in the surrounds and be fine. I have heard that the accuton mid can be a bit too revealing for classic rock. Its my understanding that the SS 9.5's are the SS series version the song beats and are much more forgiving of lower quality source material than anything with the accuton mid. The most forgiving of the song3 range according to Jim is the beat, and the least forgiving is the 3a.\n\nDefinitely get in touch with Jim. He is very helpful and will answer all your questions and give you suggestions based on your music and listening tastes. Don't feel like you're wasting his time because you won't be ordering yet. I emailed back and forth with him for several months before placing my order! I think he's well aware that it is a big purchase for most people and he wants to get them the right product.