I have a Remus muffler on my 88 300CE. I decided to go with Remus because it's made in Germany by Sebring. Sebring is the same company that makes AMG mufflers.
I also was concerned about making my car sound like a hot rod.
At first, I was going to purchase the muffler from AMG, but they are a bit pricey. Once I heard about the AMG-Remus-Sebring connection I had to go with Remus at a fraction of the cost. Anyway, I am very satisfied with it, both performance and sound are awesome.