My wife ( a.k.a. Mopar Mom) went with the Dynomax Ultra Flo Welded Mufflers

[Mopar Thunder]

My wife pulled the trigger and bought some Dynomax mufflers and removed the rear resonators. It sounds really nice I think and seems to have perked up the car. Below are some links if interested.

Dynomax Ultra Flo Exhaust on 2012 Challenger R/T

Dynomax burnout takeoff Challenger R/T

[Sleepychallenger]

Sounds real nice! 

[RusTy/SE]

Sure does! 

How does it sound inside?

[cudagirl4406pk]

Nice sound

[hpe600rt]

sounds good i went with corsa xtreme on mine

[Mopar Thunder]

To me there isn't much drone, it is a bit louder than the stock exhaust inside but then again I like most things louder.   She says it is just what she wanted.

[MizzouRT]

Sounds good, my only concern with the rear resonator delete is the potential for drone.  I put the original MBRP catback on my 5.7 6-speed and the drone between 1500-1800 rpm was so bad I put the stock exhaust back on.  Eventually MBRP came up with an improved catback to address the problem, but I stuck with stock after that.