I bought 2 PSA subs, very happy with quailty and perfomace, the order process was fast and smooth very big bang for the buck I was impressed, and the end thats what it's all about. Don't get me wrong I like axioms but the ep500 V4 just didn't do it for me when I replaced my KSW15 sub so I had to send it back, my short list came down to either PSA or Rythmik.