What's a better place to grind for Phoenix Feathers?

I made a calculation on it, and posted it somewhere on the question and answers part.
Advanced node is a good way to acquire it, for 1-3x run with 100% event CEs and Bronze drop bonus. It will be a walk on the park.
It's gonna be 14-17 Bugs on the node while using +100 % enemy, so prepare for your drop fiesta.