[alpaca128]

Those two printers are also smaller and not as accurate at high speeds. The A1 Mini's slicer automatically places parts close to the Z axis in an attempt to reduce the issues and it uses input shaping, but given the printer can lift itself off the ground at default speeds that's not a perfect solution either.

There's a reason the larger and faster printers often use the CoreXY design instead.

[KeplerBoy]

Of course, there's always trade offs in (mechanical) design choices. But their static accuracy absolutely is that good, which is fascinating at that price point.