Super beta prostate has 600mg of plant sterols., and others. other manufacturers of beta-sitosterol don't have as many in theirs. is this important?

No,is the short answ: Plant sterols are primarily effective in decreasing cholesterol, while there may be some effect on prostate hyperplasia, it is relatively minimal.

It could be: That a higher dose certainly sounds better... However to my knowledge there is no scientific proof that any sterols have any long term beneficial effect on prostate hypertrophy. The "drug" is advertised on the net ready to order. Go see a urologist have a psa done and listen to what the dr. Will tell you. Do not treat yourself!