Best Formation Ever?

[Kleber Romeu]

In short, what formation is the most solid, effective?

4-5-1 V? 4-3-3? 4-2-1-2? 4-1-3-2?

I want to keep training and not keep changing? What formation advise?

[meis]

I don't know which one is the best, but 3w-3-2w-2 is quite adventurous