this is what mine sounds like...through a puddle but the idle sounds good in it
i have the highflow magnaflow cat and magnaflow muff and duals

https://www.youtube.com/watch?v=f3Ql...ature=youtu.be

 

Some where on the net there was a comparison done on the most popular mufflers and how much sound (db) they gave off. I find it hard to judge from the sound clips on the internet because of so many variables. But it's a place to start if you know how brand X sounds.