Vandersteen 5a vs Quatro ct which do you choose?

Quatro's would be a better fit. How high are the ceilings?
Bob

From what I have heard, no. 
But, considering room design and cost, I think the Quatro's would be your best move. 
Don't take my word. Ask John Rutan at Audioconnection ( you can PM him here on Agon). He knows Vandy inside and out and will give you the best info regarding the speakers and your equipment.
You can also call Vandersteen. Mr. V. will call you back the next day- Just be sure to have all you questions lined up, as he can be a bit abrupt.
bob

Another member is Ctsooner. He just got his Quatro's a year ago, and his room is quite large.
B

@ctsooner , nice to see you found this thread. I bet those Quatro's are killers. I hope The Music Player is working for you. I got the Mini, but still have to get it hooked up. This humid, hot and wet summer has drained this gardener.
@OP,
I bought ctsooner's Treo's. I have them paired up with Vandy 2wq subs.
I don't think I can do much better for the money. Heck, I don't think I can do better for twice the price.
Bob

It is those integrated subs with EQ. 
I just wish I had the money to buy a pair of Quatro CT's. Though I find my current setup pretty amazing.
@OP, just get in touch with John Rutan or Mr. V. 
Bob

Now, this is an offer I am hoping to take you up on...
B

Whohoo, Seattle here I come....
Just have to put my gardens to bed.
Bob

I lust for the Sub-3's, but they are out of my financial league.
But, to be fair, my 2wq's are no slouches with my Treo's.
If the OP is buying used Treo's, it would be a great move.
FWIW, buying Treo's and 2wq subs should bring you to more than 80% of a pair of Quatro's...
It just depends upon how much you want to spend.
Bob