Mufflers like Dynomax

Thank you @-Boosted- and @remytherat for the recomendations, have either of you experienced droneing with those mufflers? And would you say that they are quiter then the flowmaster 40s? thank you.
Quieter and definitely better than a Flowmaster in every aspect (in my opinion). As for drone, I don't notice any although I don't really drive the car on the street much.... lol