Many of you sound like you want the best of both worlds; loud at WOT but quiet for cruising. A vendor needs to come up with a vacuum (or boost) actuated bypass valve exhaust system like most of the modern exhaust system these days. Kreissegg, Capristo, even stock BMWs incorporate them.
All renditions of the pretzel exhausts sound awful to me. They may sound good for a portion of the rpm and at WOT but as soon as I hear that wet fart deceleration sound i'd be embarrassed as all hell. That sound is awful. On top of that, they're restrictive. Lose-Lose situation for me.