Vandersteens, PSB or something else?

I owned three pairs of 2s, then went to Revel Studio 2s, then went to Magnepan 3.7s.  For the size space that you have, I don't think 3.7s would suffice, but 20.7s would.....  I would not pair Magnepans with subs....

Vandersteen represents good value, but frankly if you listened to the likes of Magnepan for a week or so and then went back to the 2's.....you would think they were an absolute trainwreck sonically.......

If realism is top on your list (instruments in acoustic space, rendered realistically) then you cannot do better than 3.7s or 20.7s

If you need more low end, then Quatros will probably be mandatory, but those are in the same range as 20.7s which you do have the space for.....

One speaker way out of left field that is what I would describe as the best of both would be the Marten Django XL.  I heard a pair at my dealer Reference Analog in Oklahoma, and then when he took them to the Rocky Mountain show and it is probably the only dynamic speaker I've heard that I could live with after having Magnepans and they are not really that expensive......

Realism? Magnepans? More like pleasant, euphonic colorations. Realistic presentation? Hardly.....A sub IS exactly what a Maggie needs.

+1 mr_m.
In fact Vandy subs are considered an excellent pairing with Maggies.
B

Have you actually heard Vandy subs with Magnepans?    Where?     Ive heard them    along with JLs and Rythmik

If you want more bass from a rbbon    you get a bigger ribbon

As to euphonic coloration, I honestly have no idea what you are talking about, you obviously have heard a different loudspeaker than I

There are no absolutes unless we are talking about statistics.  That's why audio is so much fun.  I purchased the Quatro's over the Maggies adn I could have fit the 20's if I wanted them.  Maggies are not easy to fit in a room properly.  That's the reality of them.  They also have to be padded down a bit with those resistors for my tastes or they are too hot.  I like them and I like them a lot, so not just being a fan boy.  For my ears Vandy's have the best tonality.  Value for the money???  Yes, but that's also at the top of their line too.  I've had my Quatro's up against the Persona 9H's and they clobbered them (persona's are to hot on top for my ears as well as many of us who have heard them).  I like them better than the Magico S3 mk 2 (whatever their newest is).  Better timber etc...  Magicos for my ears aren't coherent.  I like them better than the new B&W's (all of them as they are was too up front for ME).

Marteen's are nice speakers.  I actually like Tidal's too, but too expensive and they have some issues also.  The problem I have with Marteen's is personal.  I won't do business with companies who sell out the back door and screw the dealer.  That's fine for us if we want a great 'deal', however it also clobbers resale value.  I have the same problem with Pass.  Again, just my thoughts and not saying you are wrong saying what you say about Maggies.  

You can't make a perfect speaker.  Just not happening anytime soon.  Teh best designers know what compromises to make. That's where I feel Richard is better than anyone going.  He's been around, has passion and knows what he's doing.  

To me it's exciting to see where he's taking things.  Those Sub 9's I have been told are amazing.  So easy to use that EQ to mate to the room.  I can't believe how great my Quatro's bass is as I have such a difficult room.  It's been a blessing to be honest.