I cant make up my mind on what size thater brush to get. Seeing that i only have almost a year of straight shaving under my belt,i just been using my one and only brush ( vulfix 55.00 ). I mostly bowl lather but also have an assorted pile of soaps. So whats the diff between a 28-24 -22 other than size,do the bigger knots make more suds?Also how do chubbys stack up.thanks