Brimstone nights are simple since the missions are all written. It is just the setup and tear down that requires any time. The games are usually an hour and change now that we are becoming super familiar with the rule set.
The 5th D&D is where it is really at though. I have been running two three games a week for the two of these game starved people. Well game starve for now.
I hadn't run or played D&D in months. Damn I missed it!