What is the hardest trophy to win on the game in your opinion? And what is your favou

[Max]

Used to be the cup. When they moved from 128 to 64 teams + only +1 lvl teams at worst, it became rather easy. It used to be my favourite competition but now I must say CL is much much harder and became the one I prefer.

I view it the same way, CL is always the most important one to win for me.