My first Simpson, I bought the value leading Colonel to see what all the fuss was about. The brush is underwhelming when first inboxed, especially compared to the cheaper Parker Pure I owned, First use showed what all the fuss was about as the Colonel was soft yet with plenty of backbone and the dense knot packed in lots of lather yet released it readily. The softness is a bit less apparent than the Parker but the Colonel is not in the least floppy and is considerably denser than Parker or Whipped Dog HMW.
After using for two months, the Colonet has aged very well, maintaining its density and losing virtually no hairs, Tips also softened a bit. This is a great value, and the only real problem is that you may find yourself wishing you spent more on a Simpson. My opinion: if you plan to mix up face and bowl lathering, the Colonel is your best bet for less than $100. The Commodore is comparable but is kind of a poor mans Duke 3,i.e. A face lathered specialist. If you are sure you will face lather exclusively, the Commodore X3L is a somewhat better option for under 100. But if you are spending that much, why not get a Duke 3 which is as dense as a Chubby 1?
Anyway, for the price, the Colonel is the sweet spot of the Simpsons line. I was converted and see the clear superiority of Simpson as a brand over my much floppier and less dense Kents and Vulfixes.