Beastdrol will provide the most explosive gains; but will be incrediblly hard to keep after pct as most of the weight gain is water/glycogen bloat
Helladrol will provide slow lean gains; will be easier to keep these gains after/during PCT
Epi is similar to helladrol as far as lean gains
Katanadrol is best stacked with Epi or Helladrol for more of a cut and bf reduction