Anybody out there got one of the Carvin basses with the J99 j-style pick-ups? Specifically, how quiet are they? A buddy is about to order a Carvin bass with the J99 in the neck position, but since it's a single-coil pick-up we wondered if it is noisy like some j-style pups. Should he swap the J99 out for one Carvin's H50N stacked humbuckers (that's what I've got in my LB75 and they're very quiet)? T'anks.