Borla S type is one of the best sounding mufflers out there. Couple with a good quality O/R H-pipe it will sound great.
Most mufflers won't really gain you anything, maybe a few ponies, but not enough to feel. Most of the power comes from getting rid of the stock cats, and then getting a tune.
But when it comes down to exhausts, it's always going to be subjective as not everyone likes the same things.