Mini Dungeon Event

Seeing how they are untradeable and how "under the maple tree" chair is from the 5th anniversary (so there's a chance next year we will get it, and all the effort put will be useless), what chair do you suggest me to get?

I'd like "Under the maple tree", but it says it's from 5th Anniversary, so if we will get it next year, my effort will become useless..

Moon Chair is a nice chair indeed, but I also like under the maple tree, too.

Well, if I'll get 4k+ Crystals I'll get Triple Throw 30, but it's not going to happen, LOL.