I agree with many of the preferences said already...
My favorite way varies over the years.. defenitelly love to do it with my partner…
Sometimes on the shower and somethimes with my left hand… feels different.
I do it every other day… mostlly at night. Sometimes during the day I have to stop what I’m doing in my work and go to nearest bathrom to just masturbate.

PS to the OP.: Very nice Post! ;p