All you managers out there I would like to know what works best for you?

1. Keeping the same formation all season.
2. Changing your formation to counter the opponent.

This season I have used
14 different formations in league - final position 2nd
6 different formations in champions league - final position Champions
6 different formations in cup - final position play offs

My friend used the same formation all season & he won our league by 4 points - champions league runner up & cup never made it past the first 2 days.

On this basis it seams as though either way works just as well.