I thought I also going to consult the wise forum before making a decision and ask for your opinions.

I am a fan of ballheads and soon will have my first 8x10 arriving.
As for my 4x5 my old Hama 60mm ball and my smaller Manfrotto 498 have been trusted tools.
But even though the tight ball are pretty good, I felt that the losen up is a bit careful to control otherwise gets too lose too quickly.

But as I want to keep using a ballhead, I feel a new version stronger one must be acquired.

Now is the question which one it should be.
I have narrowed it down to 3 models looking at other threads to similar topics:
Arca Swiss Monoball Z1, Gitzo GH5381SQD or FLM Centerball 58 FT.

They all look very good and sturdy to me but I have difficulties to decide which one is best for my purpose.
Most important is the elimination of above described challenge; I want to be able to adjust the view by loosening the ball a bit and have enough friction to control the movements without any risk of slamming down the camera.

My total weight will be around 10 KG.

Price range used should be around 300-400 $.
Weight is for all similar, so 100-200 grams difference is not an issue.

Which one do you recommend?

Thanks a lot and best regards, Miguel