Better quality?

[nonovurbizniz]

No it's gradual... the resonator is (if your exhaust has one) is a straight through muffler directly after the cat.... it is the area where the exhaust gases really start to expand... this causes backpressure which puts stress on the weld holding the "lid" of the can style muffler which eventually blows out... also water tends to sit there (h2o is a product of any combustion reaction) which makes it rust faster...

It's something there's nothing you can do about other than eliminate the resonator.. which results in the "fart can" sound... especially with a straight through muffler but still pretty farty even with a box style muffler.