I'm on a Dbol (30 mg 4 weeks)/Test E (500mg)/Primo (700mg)/Tren (50 EOD) cycle right now, started yesterday, I feel great, it's been 2 months since my last cycle, hitting the gym today, I had meetings yesterday and couldn't make it, I hear nothing but great things from people I know who have done Primo, maybe the ones giving you negative feedback did the cycle wrong i.e. dosage too low, not long enough, who knows! I've seen my friend grow nicely with it on 500mg EW comboed with Test E.