There are a few topics here.
Cleaning brushes during use - drag through with a comb; or daub and clean in the CLean and Go, or wipe with a lint free rag; or wipe bristles vigorously in paint conditioner dropped onto a piece of lining paper.
Storing brushes that you are going to keep in the same colour - just store in the gel Store and Go, or in a brushmate for oil;
Keeping painty brushes safe till you can clean them - put in Paint Brush Cover or Brush Vest
Clean after use ready to store dry Leave brushes overnight in Krudkutter Brush Wash or original, preferably not resting on the bristles (in a Pelican with the magnet setup) Wash out in the morning under tap and flick out excess water and store in Paint Brush cover, or Brush Vest.
Quick cleaning brushes for a colour change In water, use the Clean and Go with the grid in the bottom.
I think the Dutch painters have got a system that we would do well to adopt. It isnt obvious because of cultural differences, they tend to use sash brushes, and also have had no oil paint in interior decorating for 10 years so have had to find a way to keep their brushes in good nick. It is still optional in UK to progress beyond the wasteful polluting ways of cleaning water based paint brushes, but it is coming.