Summit exhaust systems, are they decent?

I am running summits 3" exhaust on my dart. I like it but it is loud. My 2 year old boy runs away when I start it up. I am happy with it. I have a sound clip if you want to hear it. I know that one of the pipes is a little crooked. That's my fault. I just wanted to hear it run.
http://www.flickr.com/photos/29209642@N00/3786346360/