its been said before and Ill say it again these are two different compounds both with very keepable gains if you know what your doing.
use dbol if you want to gain fast,have a great diet and your shit totally together,even needsize has admitted to keeping gains off dbol and he knows alot more about this game than I ever will.
omna-its a great drug I used it for my first cycle,but it takes about 3-4 weeks before you start seeing changes and you have to run it longer,but gains can be similar to those made on dbol,it will just take longer.