If you want loud with a nasty deep tone get MAC axelbacks. They're so angry sounding. They are really droney when first installed but it gets tolerable after a couple hundred Kilometers. Bridges and tunnels are fun as well
If you want power gains you'll need headers and X or H pipe with high flow cats. Or none
I have had so many exhaust systems....and if this is your daily driver, go with Corsa ! Power gains, NO drone, and great sound when you get on it. I like a good sounding exhaust like everyone else, its just that dam drone that kills it for me..... Good luck.