One lesson I learned over the years is that diet is everything, bulking or cutting, its way more important than juice. I remember the first time I hit 3000mg a week, gained nothing because I wasnt eating enough protein... Next time around, same dose, but around 400grams of protein per day, I gained some mass.
As for doses, they have gotten high, and I am still having trouble gaining at these amounts, my last few bulkers were around 4000mg a week(I do know guys that use way more, along with gh and everything else). My last blood test was after being on for 4-5 months, first at 4000mg for the first few months while bulking, then 2000mg while dieting, and everything was in the normal range, so I dont feel like I am taking chances with my health
I do plan on taking a bit of a coasting period now though, I am usually so wrapped up in trying to get bigger, I never stop to enjoy what I have built so far...So for the summer, going to run maybe 200mg enth, 200mg primo, and just enjoy eating, spending time with my family, and being big(I still dont see it when I look in the mirror, but I know its there)