By far the best shuttle around for mach and andrey is very good and trustworthy to deal with. Price is excellent for such a well finished and thought out product.
He also customised the overlay for me to match my own buttons.
The way the rotary dial and spring loaded collar works to rapidly move axis and then dial to do small adjustments works superbly.
My only minor comments would be that the cable would be better exiting the top of the unit and the lcd firmwareis hardcoded to only show 3 decimal places on the dro. As i work in mm then i only work to 2 dp on my dro and mach rounds the display.
These are really only minor preferences though and other people in any case may prefer different configurations.