Well for what it is worth I listened to Metallica's Black album (among other rock) on both the 802D/803D and Spire. The spire had lots of bass and energy to well... Rock. They seemed to play what was there no more no less. While the B&W can "rock" too but they need to be played LOUD to come alive.
Logans can be pretty hard to place right. I find the bass integration changes with distance and integrate best at about 10 feet. If you sit to close there is too much bass and they can sound thin if you are too far back. They also need to be off the rear wall a good bit (most speakers should be anyway).
But really use your own ears and pick the one you like best. I would go listen to all of these speakers again and if you go with Zu have a money back guarantee. I believe any of these speakers will be a good up grade from Klipsch RF-7s
Logans can be pretty hard to place right. I find the bass integration changes with distance and integrate best at about 10 feet. If you sit to close there is too much bass and they can sound thin if you are too far back. They also need to be off the rear wall a good bit (most speakers should be anyway).
But really use your own ears and pick the one you like best. I would go listen to all of these speakers again and if you go with Zu have a money back guarantee. I believe any of these speakers will be a good up grade from Klipsch RF-7s