it all depends on your body type, your body's limits

if your goal is strength once a week high volume heavy weight. and maybe a super light day for speed drills.

your CNS gets burnt out from heavy weight.. don't let people trick you.. if you aren't juicing i wouldn't do more than one heavy day a week. and no more than 2 or 3 super heavy days a month..

i'm not a pro but i put up around 2.2 times my body weight raw on bench (no juice) and i do heavy bench on day one of my split and then a 2 set 40% work out on day 4 of my split and only three heavy weeks out of every four.