The reason I ask this question is because I got a set of 5 string flats yesterday and put them on my Pedulla Rapture 5 string. The B and E strings are very dead--thuddy, not very responsive, almost no sustain. The A, D, and G are Super Bright and twangy and ring like roundwounds. It's really annoying--I put them on the bass for a recording session tomorrow, but it literally sounds like I'm playing two different basses. I know how to properly change, cut, install, stretch, seat, and tune strings so it's not my fault. The strings sound like this acoustically (and amplified), and the Pedulla has a very even string-to-string response with all the other strings that have been on it. I played the strings at a 3 1/2 hour gig last night, and still, same thing. The only other strings I've had problems with are Labella Super Steps, which also sounded very different string-to-string. Perhaps not coincidentally, R. Cocco makes both LaBella and Sadowsky strings. I'm going to contact Sadowsky and ask for a refund because these strings are definitely not "the best you ever played" (their marketing line). Just curious about other peoples' experience with these flats.