i´ve been farming 12-3 from today and, at least for me, the 80 stamina secret garden is waaay better than the 80 stamina manyu daily one, i´ve got only like 2 or 3 lvl 100 manyus from 3 runs of the manyu daily, while in the 80 garden i got 3 red lvl 100 manyus in only 1 run, the only downside its the rng in here to get the 4 chest, you get better rewards either way, without mentioning the chance of getting some ampies in 12-3