Quad ESL 57 - Which to buy

I have an opportunity to purchase one of two pairs of Quad ESLs. One pair has been fully restored recently ($2300) (original panels, new rivets, new mylar, new dust covers, new electronics and EHT) and the other is an original late 1970s, single owner pair ($1200) always driven by Quad II amps. Both look and sound great on their own(they are in different towns, so I have not been able to do a side by side comparison). Both are quiet, power up well and show no signs of arcing. Cosmetically, they look identical.

I'll be driving them with Quad II-40s.

I'm in Ontario, Canada.

Any opinions on which would be the better purchase?