A new machine gives you a warranty, the latest control and zero unknowns — at full price and a lead time. A used machine can cost 40–70% less and ship now, but you're buying its history: hours, condition, maintenance and any worn ways or spindle. For most shops the right answer is a well-vetted used machine at a fair number, with new reserved for a specific new capability or a cornerstone machine you'll run for a decade.
The decision hinges on condition and price. Know what a used machine is actually worth — value the exact model, hours and options free at The Machine Blue Book before you negotiate either way.
Get a real number from a Machine Blue Book specialist — free, no obligation.