(This post was last modified: 07-17-2020, 12:47 AM by DanLaw.)
Being fairly unknowledgable regarding brushes and knots generally defer to those with more experience and expertise. But since you made reference, have come to many of the same conclusions as the avowed experts as my experience has increased. Specifically, regarding the higher loft and softer knots more readily producing lather, have indeed found this the case for all types of soaps and cremes. Will readily admit, for application of the bowl generated lather to the face, strongly prefer brushes of density and backbone albeit sans scritch. So this not a question based on bias towards high loft soft knots. However, my experience does comport with the prevailing opinion whether triple milled French soap or soft Brit cremes