H have a Thater 26 mm 2 band brush with a bulb knot. This brush is everything I want in a brush, except now I want another one to go along with it. I guess it's a case of just wanting more of a good thing. I'm concerned that a 3 band silvertip, even in a bulb knot may not have the backbone I'm looking for. I'm considering the same brush in a 24 mm size. what do you guys suggest? I want something special to rotate with the 4125/2. thanks