Just want to chime in and say that I've used the Sachtlers quite a bit (owned 20SB and 18SB) and these are EXCEPTIONAL heads! Construction is high quality and movement is smooth and precise. While Miller is a great head for the money, it's literally like a difference between a Ford and BMW (let's be honest, German construction is quite superior).
BUT I am a big believer in using whatever gets the job done, and for that reason Miller 55 is also one of my favorite heads because, as Steve wisely pointed out, price-to-performance ratio is enticing. I just don't know if I would ever see a Sachtler crack in the same way as you described your Miller experience.



