They say primo adds more mass then mast. But i dont think you need primo, just with option1 and the proper diet you shouldint have a problem getting ripped.
I would agree that primo adds more mass. BUT, do not run primo if you are looking for it to give you a ton of mass....that's just not what it's designed for. The main advantages of primo IMO are quality gains, little if any sides, vascularity, fat burning qualities, and the fact that it's one of the easiest AAS to recover from post cycle.
You could run primo alone if desired. I still wouldn't recommend it because I love test too much, lol....but I'm not sure I could say the same for any other AAS. Personally I had no side effects when I ran it a few years ago at 500mg EW. I was kinda sad that I didn't run it at a higher dose, but I still got some killer gains over 12 weeks with Test E. I think primo was responsible for most of the "permanent" gains I've achieved over the years. That was the only time I've ever run it, but may add it into a cutting/recomp cycle later this year. The thing about primo is you won't see results if you're not dedicated. If you eat like shit and don't push yourself in the gym, you'll still likely see some results with a drug like Tren. This is not the case with primo. It gets booed constantly by people who are into quick results. My suspiscion is that a lot of old school guys ran primo because they loved the sustained gains it brought.
Masteron can have some nasty aggression issues and hairloss problems. On top of that I really think it's usefulness ends at precontest. Outside of that, it will not really build any muscle whatsoever. 2 times I've run it...first time I was sub 10% BF and loved the vascularity and leanness it brought. 2nd time I was over 10% BF and it really did nothing for me other than some added aggression in the gym. This drug really fucks with your mind IMO and will do you ZERO good at low dosages and/or above 10% BF. So, think about that when you make your decision.
If you can't handle tren, consider primo as a mild alternative. Steady gains that last...in the end that's what we all want right? Remember it's not a race, it's a lifestyle, so treat it accordingly.