How do you decide?

[FenderMan]

I have plenty of soaps and creams, but only a small number of razors and brushes. I try to alternate between soaps and creams with each shave, and most often use a boar brush with soaps and a badger brush with creams.

 

[JayGee]

The razor, brush & soap combo choose on on a whim, generally picked because its been a while since I last used it.

Post shave is depending on weather, what I'm doing, is it a night or morning shave etc.

Don't like to change it up more often than weekly. Fortnightly is really nice with a straight (usually needing a light refresh on CrOx by then), weekly ( typically at blade change) for a DE.