Fruit of the Loom, Hanes, etc., ordinary cotton briefs hold it in place and don't mess with your motion. But you get those rubber cuts into your hips that don't heal for decades.
Generally, men with an active sex life prefer ordinary woven boxers (not knit, not boxer briefs). The shorter the leg, the better the feel under slacks.
Woven boxers and slacks best present your head when it's in rest mode or at half staff. And you get the peek-a-boo action. That's the long and short of it. Knits, especially any type of briefs, are for youth who get full-blown boners as soon as they get on the school bus. Keep that stuff hidden unless it's long enough to poke out beyond the belt line.