I really like the forge. They make an awesome product. I'm going with the FMDVEVO15. I got it off of ebay for $60 shipped. It's designed for the Mitsu Evo but it will work fine with my IC piping.
FWIW I have heard one on a se-r (oo7p) and it's nice and quiet. They sound like a saab to some degree. When I get everything on I'll be taking video of it and I'll post it up.
Mike