I think there are several options for multiple extruders, either with or without expansion boards. The Duet is at the more expensive end of the range, although I am not sure it is good value for money.
Another way to look at it is which firmware is best for Deltas, and then see what hardware that will run on.
Firmware support for Duet may be limited, being ARM, AFAIK, only Repetier and ambprop firmware run on ARM Due variant and support Deltas.
Another way to look at it is which firmware is best for Deltas, and then see what hardware that will run on.
Firmware support for Duet may be limited, being ARM, AFAIK, only Repetier and ambprop firmware run on ARM Due variant and support Deltas.