I have a selection of blades - Feather, Astra, Personna, Derby, Wilkinson sword and Gillette Blue/Silver. I only really seem to get on with the Astra and Personna, so I might try and find some of the other variations
My face didn't like Feather or Wilkinson Sword (classic, black box). Your face is not mine, but perhaps these aren't great blades for sensitive skin. I have read enough about Derby blades not being sharp enough to cut your stubble well that I don't even want to try them. Gillette Silver Blue (GSB) seem to be well thought of, I've yet to try them.
Good advice from others about not changing out more than one thing at a time as well.