I don't know the printers, Key may be able to help you out there.
What do you want to use it for? Heavy duty production or simply proofing?
I would also look at consumables, what the upkeep is, what the service contract is, if there is a lease program, the rip used...
Are they both $18,000? Yikes.
PrintDriver is a large format digital print dude. His advice/opinions may not apply to the 4color/offset/web world of printing