xtreme, I have always gotten the best gains in my legs from high reps while squatting (12-20). I basically warm up and then do ONE heavy set (helps make your backoff high rep set feel lighter. For me I go to 405 for a set of 2 and then back down to 275 or 315 for my real work sets. 2 sets of 15-20 with my last rep being a do-or-die attempt and I am fried. Try to get home without puking and the legs will come! Best of luck,