do whatever suits you.
If your not looking to spend lots on an exaust and just want a different sound, just try a universal like you were looking at. if you dont end up liking it, then you can just save for a bolt-on. Just make sure you get one with the right size inlet. and it doesnt even have to be welded on either (I dont think-clamps).
otherwise if you got the money and want the extra fraction of Performance, get a bolt-on off of ebay when a good deal shows up. thats what I did