Hi soundminded, thanks for your reply, is 12>5>6>17 you personal ranking (meaning 12 is better than 5 than is better than 6 than is better than 17)? As I said I never listened to any other KLH other than my Sixs, which I love very much. I'm currently driving them with a vintage english amp, the Leak Stereo 30. And I find the synergy with the model Six is EXCELLENT. Greetings from Italy.