I know this one has to have been talked to death somewhere on the site but I can't find it.. Just wondering if there were any favourites when it comes to slip ons for the 08/09 blade.. The Yoshi looks good, so to the Akra... leaning towards the Akra at the moment as they seem to back up there pipes with a dyno graph..showing they have done their homework.. Can either be fitted without having to go with a Power Commander..? Thanks for the help