Just looking for peoples opinions on any pros and cons between end cans/mufflers: carbon fibre, steel, round or oval shaped. Peoples thought on which type produces better note, more (however slight) power etc. Tossing up between a few different cans at the moment for my new bike (Megacycle, JHA, Yoshimura etc). I'm also open to welding a flange on any other can so it will fit my bike so if anyone has anyone suggestions/feedback etc on all of the above I would appreciate your input. p.s. If it makes any difference, i'm looking to fit something on my new RVF.