any suggestions for a mellow sounding muffler for a six

[old cool]

It's not that I am bothered by the sound of a stock muffler on my inliner (single exhaust of course), but I was wondering if anyone has found an aftermarket muffler that produces a "cool" sound without being loud and wild. My fairly new exhaust system is leaking at seal around the back of my 25"; round-body muffler. I thought this might be a good time to splice in a different muffler (pipes are 2.000 and perfect) that would give it a newer sound. Thanks for input.
NOTE: I searched for 30 minutes and cannot locate a thread that strictly covers this question.