Which soap or cream do you couple with Muhle synthetic brush

My Muhle synthetic v2 (21mm) got the first shave last night.

Its softness impressed me so much.

Eeven I couple it with Proraso green soap (which is not very hard),

I had some difficulties in loading soap.

I wonder if Muhle synthetic brush is good when coupling with shave cream, shave stick or soft shave soap (like Cella).

Please let me know which shave soap (or cream) did you pick when using a Muhle synthetic brush.

Thanks a lot.

Which soap or cream do you couple with Muhle synthetic brush