I used to have a set of Corsa Axle Backs and the had a very nice sound and no drone at any speed or throttle. They are near your price range, full stainless, and fit really well. They are an outstanding product and I would still have them except when my turbos went on line they were too quiet. Turbos act as an additional muffler. Highly recommend them! American Muscle has them.
Sent from my iPad using Mustang Evolution