The most insane DOMS I've ever gotten was from this squat workout (when I was much weaker and not accustomed to high-volume training):
235x10x3 (roughly 85% of my max at the time)
(worked up to a few singles with 225; which was around 95% of my max)
It was pitiful. Every inch of my legs ached. I didn't know whether it hurt more to stand up or sit down...that DOMS literally lasted all weekend and carried into the next workout.
God I was weak...haha
Form follows function.