Question for you guys who have experience with Marshalls. (Heavy Rock)

I’m just beginning to mess around with a 50 watt JCM DSL 2000 my friend loaned me. I’m wondering, since the modern Marshall heads have master volume’s, do people still crank them wide open like they did with the old plexis? Or do they just dial in the tone they want, and crank it enough to get some air movement and pressure off the cabinet?