ricko

I just want to get opinion on just the muffler. I want to know what name brand sounds the best.

xviper

If you are talking about just the muffler cannisters and leaving the piping alone, the car has 3 cannisters. Due to their small size, you will be hard pressed to find any aftermarket cannisters to fit in those spaces. If you should actually find some and do this, you should leave out the single cannister just behind the cat.
You might try going to the Borla website to see if they have any that small.