I'm a little confused at the last post the way it's written, but I assume it's saying that the Beginner Bonus Stage is better in terms of leveling units than the Intermediate and Advanced stages stamina-wise.

I am to the point where I want to reach my units at evolution level. My main members are all 40+ but it's difficult to find many Manyus to do that. I have chosen to farm Event Stage-4 for now due to its absurd amount of tier 1 and tier 2 gifts that it drops and I have reached max affection in 9 units so far, but it's time to focus on levels now. So I have to find a fast way for getting Manyus. Is 2-1 or 1-3 a good way for post-level 30 leveling or is there something else?