Non 17aa orals,effectiveness and toxicity.

How does the effectiveness and toxicity of non 17aa orals measure up compared to the 17aas ?

There are quite a few ones out there for a lot of years now and by big pharm companies (proviron and primobolan are the best examples,and now there's boldenone).And the knowledge is that they're not as toxic and unfortunately not as effective,but could we talk with numbers and percentages of absorption and given effectiveness ?

For example,how much oral primo should one take to have the same effect as 500mg/ew of injectable primo ? And how would they compare in toxicity ?