Guys i really need more advise please. I am about to purchase stepper drives for this panel but not sure what size to get.
Deciding between DM556, DM856 and DM860.

At this stage it's hard for me to stock all three sizes. Would a DM856 be okay for most Nema34 motors?
Reason i am trying to stay clear of DM860 is the physical size....want to have the option for up to five motor drives in the panel

Advice greatly appreciated!