I have two of Kent's cloths brushes: the ones you mentioned are indeed very good. But my own view would be the CG1 is a small size long & slim. And the CP6 again is small size Long and slim, is is mainly for use on Cashmere garment's.
I use the CP6 for my Fedora's and I have a CS1B in Cherry wood with pure black bristle, excellent shape & size for all my cloths. Quality is outstanding and all hand made.
Charles U.k