Even being a dealer for them I'm not sure I can sign up for that statement but I love the enthusiasm! They have always offered incredible value for the money. I've had the R1.5 and it's nice. I haven't had a chance to get the P-307a yet but hope I'm not too far away.
There are a few models of their speakers I've not heard from them but only a few. They're all great speakers and hard to beat at their price points.
To the OP, I think you should consider a pair of Mini Dancers or the X instead of trying to improve the S520. The Diamond tweeter is one of the best tweeters I've heard, bar none, and really pushes you into what Usher is about. All clients I've sold lower models to eventually move up to the diamonds in short order.
There are a few models of their speakers I've not heard from them but only a few. They're all great speakers and hard to beat at their price points.
To the OP, I think you should consider a pair of Mini Dancers or the X instead of trying to improve the S520. The Diamond tweeter is one of the best tweeters I've heard, bar none, and really pushes you into what Usher is about. All clients I've sold lower models to eventually move up to the diamonds in short order.