Best Paint for a Plaster Wall

I have a 1950's house with plaster walls and I prefer satin finish latex/acrylic paint. It reflects light without being shiny like semi-gloss. It is also easier to clean than flat paint. This type of paint also works well for the faux finishes I do for myself.

I always use egg shell which is a flat paint out of the can. Gloss is too shiny on the wall for me.