In my opinion the Kress 1050 FME milling motor is the best spindle!
I have been using it for about 4 years without any problems.
The milling motor is a bit noisy, especially at high speeds, but it has the best price-performance ratio.
By the way, the speed can be controlled.
Another advantage is the excellent concentricity of the collet chuck and the milling cutter.
Stepcraft 420/2 mit WinPcNc-USB, Kress 1050, QCAD, Estlcam
Bedenke, dass auch ein Tritt in den Hintern einen Schritt vorwärts bedeuten kann.
"What are the differences between the different names? its not very clear (FME-P or FME-1-DI)"
Both are Kress or Kress related spindels of the FME serie and both have 1050 Watt power.
The "P" stands for the collet size in this case a the collet standard of ER-16, you can use any collet of this series to mach your milling bit max dia is 10 mm.
the 1D has a tool change module attached for the ATC and has a collet standard of ER-11, so any collet of this series can be used max dia is 7 mm (this is shaft diameter of course).
Both machines are very good and stable.
Just remember that for the ATC you need an AirCompressor and a pressure of 4-6 bar to operate the ATC