The pen tool is the only tool that I keep as-is and somewhat uniform (and also because those settings are really easy to remember haha). 

The brush tool is significantly less set in stone haha;; I’m very fond of using the flat brush, but other than that, I play around with the settings a lot, so those sliders never stay the same;; (ie. when I want a harder contrast, I turn everything down, or when I’m blending, say, a smooth looking surface I’d turn it up and stuff!) 

yeah!