i use Little Crow trimmers, have been using with a hand drill, but will do the next batch on small drill press. i like the Little Crow because they index off the shoulder
I’m with ya. Trimmed manually for years. Then when I started shooting in volume, had to go motorized, but took it a couple steps further by adding a solenoid and a pneumatic cylinder coupled with a foot switch to load and unload the brass. Then just have to run the motorized head in and out by hand. I may automate that in the future as well.