at a body weight of 175lbs i used 20 plates (900lbs) for 8 sets of 12-15 reps and took a plate off and did a drop set on my last one gettign 4-6 reps on each plate dropped..so i guess you could call it a 10 drop set..
The thing is i see most 80% of guys doing leg press with a 1/4 - 1/2 lowering range and call it a rep...i brought the plateform all the way down till it bottomed out then i pressed from there..well past the 90' range they say..it was more like a 120' my legs looked more like a V then a square corner...
the deeper the better i felt..at 5ft 6 175lbs i had 31 in thighs and 19 in calves at 9%..now that i am 37years old and my knees are shot and do not go past 90 and that still hurts...still got the size,shape and look but not the strength..good luck guys you can have the heavy weights...LOL