The best sound would come with a new stereo. Maybe an Alpine or Pioneer they both are capable of Auxilary inputs thru line level. This will give you the best sound quality. It really isn't a big deal to change the stereo. I own a car stereo shop & the Dodge is one of the easier vehicles to swap out a stereo. Crutchfield is the best online support & can answer all your questions along with supplying you with the needed parts. Give them a call.... The wired FM modulator works good, however changing your stereo will give you a much superior sound than the factory Dodge stereo