A DeVlieg horizontal mill would give you the working area you're craving but the floor space is pretty massive. The machines are not easily found.
A router might suffice, area wise, but I don't know about how accurately it would digitize. THis would depend on the drive system and/or the rigidity.
Probably the most versatile unit would be a/the VMC. SInce it will be ball screw driven and designed for cutting metal, stiffness and accuracy should not be an issue.
I"d go after a VMC... |