I am very finicky when it comes to condition. These are as close to new as one could imagine. Many people feel these are better than the Zeta. I have never heard the Zeta if they sound even close to these they are fantastic speakers.
The best thing to do for info is just google them. There is a 16 minute dissertation on them by the owner of PBN. That will tell you all you need to know about how they are built and how they sound.
I like speakers that look as good as they sound. These fit the bill very nicely. They ship in three wooden containers, which I have. they are very heavy and can be shipped anywhere in the US for less than $1,000.
Over the past 15 years I have owned numerous Wilson products, B&W, Eggleston, MBL, ZU, Sonus, just to name a few. These speakers are around 2 years old. These are as nice as anything I have ever heard or seen, period.