Primo seems to me like just another steroid with a good niche use.
There are maybe like 5 legitimate steroids really- test, deca, dbol, tren, masteron. Adex and viagra for accessories
Anything else, very niche drug, specific uses only really.
Not as if no-one ever got shredded on deca & dbol solo, good diet and as much adex as you can deal with and you'll be drier than an 80 year old vagina for sure
All these other drugs? Save your money and buy what works best. Test will give you all the growth you need. After a while, yeah you'll hold water so you can either decrease the dose to something with no water and add in another product. Or you can just deal with it and drop the test 2 weeks out from photoshoot and add in masteron instead. Diet dictates body fat, not drugs, so just keep that in check and you'll be fine