To make it short. I do not find a lot of bitching to Hama polarizing filter. Only the adjusting pin for the outer knob of the filter is a little wobbly. Since I already know the problem of my 72mm polarizing filter, I simply unscrewed only the pen and is good. The bezel is running smoothly. The thread also. The build quality is OK.
The imaging performance is improved by the filter. Mirror oaks are significantly avoided. Get the images at super bright weather just more contrast and depth. I also use filters from Hoya and can qualitatively detect no difference between Hoya and Hama.