A quick update on my planned review. I ordered Tuxedo, Cashmere (APShaveCo) and Ubersoft 2 (Envyshave) knots from Etsy this morning. All knots are 24mm, in an effort to keep the comparisons as close as possible, and I'm considering my experiment design. Here in the near-ish future I'll get a thread up and get some input from everyone.