rar1
These would be the easier to live with choice with free shipping in the price.
IF OP really likes the sound of Cornwalls, and IF what Skifi says is true, transport is the immediate issue (no refurb needed currently).
I have never seen that Marquis cabinet before. If they become your beloved speakers, in the future the cloth could be replaced, a woodworker could refinish, adding a select veneer of choice ..... I would put them on 3 dual wheel casters, and tilt them back a bit like my existing ones, not only directs the tweeter, it changes the angles of reflection off the floor/ceiling/eventual rear wall.
I 'know' their sound (possibly preferable to the Cornwalls, certainly similar), For me, the pair of L-Pads to adjust them in any listening space using a CD with test tones and an SPL mike is highly desirable and the Klipsch lacks that. They could be added to the Klipsch, especially the restored ones.
You never know what floats another's boat, who has a cousin Vinnie with a big SUV that could pick them up and come visit, and I don't know what space or equip OP will use/change to, or his retirement plans and how that will effect 'big' stuff.
However their age/future is an entirely different matter when compared to a fairly current Cornwall and Cornwall the far more common 8 ohm.
I've got spare drivers and re-cone kits, If mine were stolen by a pair of strong theives, I would probably go back to a pair of JSE Model II's,
The Cornwalls have front ports, the Marquis rear slots/vents, I have a rear 'tuned port' designed by Electrovoice Engineers when I designed the cabinet, however I have it blocked here, I used it open in prior location when there was no wall behind the speakers.
I want to stay with tubes, they are sensitivity 90db, not sure my Cayin's 45 wpc would be enough for very dynamic content, I used McIntosh SS 2250 to drive them in the past, just because someone gave it to me. I never tried less power with them, I just assumed my Fisher 30 wpc 80az mono blocks were not enough.