Two-Band Finest. Almost as soft as a Silvertip, but with much better backbone. Another good choice might be one of the Simpson's Duke line of brushes in 'Best.' Their Best is equivalent to most other manufacturer's Silvertips. The Duke line are over-stuffed brushes, with dense knots. That gives them more backbone than a normal silvertip. A high quality boar will be pretty soft as well if you soak it before shaving, but still retain a good amount of backbone. Check out Omega or Semogue. ...or you can stick with Synthetics. Certainly the cheaper option. If you are happy with them, I don't see any reason to pressure you to start trying other types. That can be an expensive rabbit hole.