Beast is stronger.
Hella is a great compound for recomp and lean bulking. It's mild and practically side free in the 100mg ed range. You should run hella 5-6 weeks IMO.
I would run beast when the goal is bulk and hella if you are going for more of a recomp.
Btw, word on the underground is MrSupps will be having a big sale soon, so keep an eye out.