I bought a VK500w/BP used and it was a great investment. I had it setup for a bit but, due to space constraints, it is boxed up right now waiting to be setup again. It's as good as the ML and Krell amps I've owned in the past IMO. And I too would like to hear from anyone using BAT SS and Wilson WP's as I'm trying to scrape together the $$ to get a pair of WP6's......