I have owned Martin Logans and have heard the Zu speaker line regularly at my dealer, until recently, when they dropped the line. This is probably an overstated generalization, but I have found that all but the top Logans have limited output capabilities, and also they just don't seem to be voiced for rock music. Not that they couldn't do a good job with some rock. The Zu speakers on the other hand were born to play rock at high levels while still maintaining their core strengths. I feel that if rock and pop are the types of music you listen to most often then the Zu speakers are tough to beat, and extremely easy to drive.
