I think it all depends if you would want to had decats or hfc later on to which exhaust would be best . If you are staying with oem cats then I'd say the ark ... If planning on adding hfc later on then ( for me at least ) the ark would be too loud , so would opt for a miltek or invidia ...... All these 3 systems are top quality exhaust which are made to a high standard . I know a lot on here like the cobra but from what I've seen they are not built like ark/invidia/miltek