i used size on/superpump my summer going into my sophomore year so about 2 years ago in a month i gain 80lbs on my bench and put decent size onto my frame however my diet was complete crap, my endurance did increased a bit and recovery was pretty quick however the powder mixed sucked... I think size on has pills now, and tried mixing orange gatorade with orange flavored superpump if you try this stack
AP, RPM, Drive, Neovar
I have used RPM and i loved it the drive and the focus was out of the world, i rarely had to rest in between sets and never wanted to leave the weight room
I used AP once the pump i got from it was outstanding i couldnt flex my arms, they were so tight however during curls i had to run over to the garbage can and vommit my brains out and then ran into the bathroom with stomach issues,
but the pump was well worth it....
AP reacted with a medication i was taking at the time
Drive i used the samples but cannot really tell you much since it was only 2 days worth
Go with the Drive, RPM, NeoVar, Anabolic pump stack you get pretty big bro , better than if you took size on and superpump
40/40/20 diet ratio you Will get big