For three months these units are input in my park and the only things ngatives are the weight (thankfully grips are 4 places!) And the fact that the arc 575 is delivered without dampers stream (they must be taken as an option).
Compared the trichro its competitors is beyond reproach and the flow, the orientation of the head ... clever fingers that clip before this projector!
It is a professional tool at a reasonable price.
I trs SATIF