I've heard L1s, B1s, and F1s, but not the B2s. I'm sure these products work great for folks and their clients when used in the right application. I was just debating the comment that Bose is above cutting corners and stated some examples. Bose prices are not cheap and I just said that I would expect better. Pretty much all manufacturers that offer MI and entry level equipment cut corners somewhere or they would only be offering touring equipment. It's up to you to decide what you can and cannot live with in a product when making a purchase.
My mobile speakers are currently DXR10s, ZXA5s, DXS18s, TH118s, and iP2000s.