When on, my squats tend to be around 405 for 6, 425 for 3-4. I never go for singles or doubles. This is when I weigh about 190-195. When off, I stick to around 315-335 for 10 reps or so. I really think I'm gonna do a few workouts based entirely on squats though. I did that one time, just walked in, warmed up, and did about 12 sets of squats. Pyramided up to heavy 3 reps, and all the way down to 20+ breathing squats with 185. My GOD did that make my legs sore, but my lower back was pretty good. Gotta do that again!