What is honestly the best formation in this game?

[eurofieds]

I'm a fan of classic 442, it has worked well for me over the years, (I'm a level 27 player). I invested heavily in my team this season and I've been losing big to lower oppositions..
I'm considering trying something new, any idea which formation I could go with?

I play hard attacking, counter attacks, mixed passing styles and my win bonus is in the maximum. And oh, I train everyday.

I'm wondering about 4213? And I mean 3 strikers upfront which eliminates my need for AML and AMR?

Or I go with 4213 with a lone striker? And 2 wide attacking midfielders?

How about 3412? . Does lesser defenders mean you'll concede more goals?