Its been for years and years if you are in peace mode with no area damage on your weapon, you could collect several monsters and hit momentum strike or whirlwind and you would keep swinging until there was nothing hostile left standing. It was always the most effective way for a spawn warrior to fight. The reason for this is if you rely on a 'select nearest' macro, and the nearest enemy happens to be low on life and flakes out, you are stuck aggroing an enemy you are too far away to hit, and you don't swing. For a sampire, no swing is a killer. In peace mode, if one enemy flakes out between swings, a fresh one is automatically selected, your character swings at that one, and life goes on.
Mashing a select nearest macro is only my choice when using an area weapon to clear out weak enemies in the first two levels of a champ spawn, or for some reason my character would lose agro, for example by walking through a fire pit trap in a champ spawn, or fighting inside the building in the Primeval Lich spawn.