I've read the review in Absolute Sound. And from the specifications tab in the link you sent, i see that the front firing tweeter, midrange and mid bass drivers are made of the same material. Vandersteen insists that this is very important. The down firing subwoofer is aluminum and the rear firing tweeter is ceramic coated. So, the same idea as the ns5000s, which I've heard. The Yamahas are remarkable speakers, especially for the money. Okay, they're not cheap but they're a lot less than the Vandersteens.
I have Model 5s. The price of entry was a lot lower then! Thanks for the reply and happy listening.