Can anyone make any suggestions as to a pair of decent, reasonably priced slip ons that I can fit to my bike without re-mapping or taking off the Cat. I want that sound that just begging to be released but dont want to spend the earth. I have been looking at the GPR set on ebay item number 130576077163 priced at £495. These have removable baffles so should sound great but has anyone tried them? Other suggestions welcome Pete