The KO for this head was the audible smack of fat during the adjustment of the friction / fixed knob. Have the head therefore returned as lack copy. As other reviews which do not report, I am assuming that I have received a defective / too well lubricated copy. Compared to Sirui G-20x the processing is comparatively well, the panorama much better adjustment and the usability of buttons by the gumming slightly worse. Depending on the requirements, in my view a tie between the heads. With prices from 80 to 100, - but you should be able to expect a little more.