I'm looking for an aftermarket muffler to my Honda NT650 V-twin (aka Hawk GT or Bros). Noone makes an off-the-shelf for this bike, so I'm looking at the custom guys and am considering either a Madaz or a Megacycle. Both are about the same price although I do prefer the quality of finish of the Madaz. But appearances aside, has anyone got any opinions regarding either of these? Any good/bad experiences with either?