Choice of Vandersteen models

The Quattro Wood is a newer and (probably) more refined speaker, but the 5 offers greater placement flexibility with the rear-firing tweeter and the different subwoofer configuration. Personally, I’d go with the Quatro, but I don’t think you can go wrong with either option.  

Thank you all for your input. I have notified Bruce and Randy to call me if.... Both being local(ish), I can avoid shipping costs. Please keep me in mind if either pops up in your universe.

And, if you are like me, and want to save some cash, you can buy a pair of Treo's and 2wq subs and get 90% of a Quatro.
When I got the Treo's, I didn't realize that they share a similar footprint. But, now I realize that the Quatro is a bit deeper(due to the included sub) and it works better for me and my room- The subs can be moved to inconspicuous areas and still do their job.
I do know that John at Audioconnection has a pair of Quatro Wood's used, for sale. See the website.
B

FWIW, I had a pair of 5s and now a Quatro Wood (non-ct).  The
Quartos sound better than I could ever get the 5s to sound.  But I'm sure this is also influenced by room and upstream components.

I have two sets of loudspeakers, Vandy 5A and Von Schweikert Unifield Mk3.  Both pretty great.  The Vandy's are my preference of these 2, mainly for the bottom end.  You will be happy with either of your choices, I am confidant.  I would take the 5.