I was never that taken with the WP systems, certainly never enough to be tempted to buy a pair, and remained happy with my large Vandersteens for many years despite the complexities of separate bass crossover, multiamping and wiring. Then I heard a pair of Grand Slamms well set up and had an 'aha' moment that I kept in mind for some years before buying a pair of Maxx 2s like handymann.
Unlike him, although I have lots of beefy power amps on hand (Classe, Roland etc.) I have been powering mine with tubes (CJ Premier 11a) and find it to be an excellent match (although I do switch in the Roland for AV use).
I also agree that given that a significant part of the purchase price ow Wilsons is, like Montblancs and Rolex, attributable to advertising bling, buying used is the best way to go.