IMO SS is quieter than Remus and Tri Flo is louder than UUC, Dinan is about same as Remus or Eisenmann performance (haven't heard a race one personally). I really think the list depends on which Remus and which Eisenmann though. If you want loud go UUC,RE or Tri Flo; if you want quiet go Remus or SS. Dinan is just too expensive for just a can and tips.
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