You are not the only one who disagrees with me, and maybe I should listen to some more arrays using "budget" speakers. I am familiar with the PT2 and it's a good sounding tweeter, easily the equivalent of dome tweeters selling in the same price range or possibly a bit more, and a much better choice than an array of 25 cent domes for use in a line array. But as you indicated, 20 of them will set you back $500. I haven't heard the NSB's so I can't comment about them.