I know its oldass tread but imma answer anyway. Comparing Helladrol and beastdrol is like comparing anavar and dbol without water. Both will give you dry gains. And yes, you can, I mean you SHOULD stack with test base.
Beastdrol def the best I gained 15 pounds of muscle and my bench went up 80 pounds stacking it with test cyp at 500 mg a week. But better hurry and order it's banned by the 29 and on sale right now