I dont think all of advanced products are necessary or useful rhino skin is def bullshit i agree with that. So is the bud candy, the final flush, and the b52 u dont need but there bases, voodoo juice, piranha and taranutla are really good bene's.. The big bud and over drive work great and in conjunction with out base nutrients, the bud factor x is awesome as a foliar spray i dont put in res works better as a foliar app they dont tell u that though and u dont need use very much at all. Advanced is nice because u can tailor it how u want to specific crop needs by breaking down each element in their own seperste bottles thats what i really like about it.