I wish I would have gotten a volant...maybe will in the future.
The flowmaster is a good sound at idle and awesome IMO when rompped on. The magnaflow is slightly different sound I hear from friends but not by much. The performance would be the same though...the main reason why I got the flow was because I got a good deal. magnaflow has a sound bite muffler out that i listened to on their website and it sound more muscle car like. check out the websites for sound clips.