need opinion on new exhaust
 

i have a upr o/r x which i have no plans on getting rid of so i was considering some different mufflers. here are some sound clips on the 4 i narrowed it down to.

spintech prostreets
http://www.youtube.com/watch?v=Qp0fc6K4xzU&feature=related

bassani (ff to 1:10)
http://www.youtube.com/watch?v=WotKjzemrDc

flowmaster super 44
http://videos.streetfire.net/video/This-is-just-an-exhaust_120583.htm

magnapacks
http://videos.streetfire.net/video/mustang-gt-with-magnaflow_85403.htm