Ι think MC21 has more stability because of the much more solid Gull Arm swingarm,if i was you i'd buy an MC21 and throw an mc28 tank and subframe because of the much more contemporary rider's position these 2 parts are able to offer.
Best of both worlds.
PS To me mc18 r5k is still the most easy NSR to handle and steer. _________________ Addicted to that Rush..
