Maybe looking at the following to replace my Magico S-5 MK 1

When you fell in love with your Magicos and bought them, what amplification and associated equipment was driving them? That might be a good starting point. You are all over the place with random electronic queries, it just makes no sense.

If you are going to visit NYC you may want to add Auio Doctor to your list.

We have a set of speakers that are quite amazing and are very close to the $180k Gauder Acustik's top of the line model.

We have a demo set of Polymer Audio Research MKX-S. there are $68k reference grade loudspeakers that were built to take on Magico the company is very small so you don't hear much from them.

http://polymeraudio.com/systems/polymer-mks-x/

The Polymer weighs neigherly 400lbs yet is very small, only 41 inches height 12 inches wide.  The weight is due to the speakers all metal cabinet the front bafle is 120 lbs of composite metal.

The drivers are the famous Acuton pure Diamond Midrange which is a $10k driver mated to the matching $3k, Acuton pure Diamond Tweeter. 

So you have $26k in just four drivers! The system then uses a lower midrange and two  long throw 7 inch bass drivers in addition to the above mentioned drivers.

Intermal wire is all silver so are the inductors,so basically you have the best of the best parts in the world.

The sound is richer than the Magico's with incredible spped with a very holographic sound. 

We are selling our demo pair at $28k because the new Pardigm Personas offer many of the same attributes for only $35k. The Polymers do have a richer quality in the hiighs and the mids which make  them so special and you have the perfect sized room for them, the Polymer play loud but were not designed for really giant rooms, our demo room is 26 by 20 with 10 foot celings.

Here is our showroom tour which shows off the Polymers

https://www.youtube.com/watch?v=1NPIn3pEmI4

Please reach out to us if you would like to experience these unique loudspeakers.

Dave and Troy
Audio Doctor NJ

G-
It may not make cents, but when my Genesis 5.2s went on the fritz, it was time to find another speaker.  Not being one to buy new, I did not want to visit too many dealers due to the travel required and the guilt of knowing I was waisting their time and using them.  However, a dealer in Fl. was selling demo S-3 and a dealer in Atlanta was selling a demo S-5.
BTW, I had Genesis M-60 tube monos at the time.  Dealer in Fl. was driving S-3 with D'Agostino (model?) and dealer in Atlanta was driving S-5 with Constellation.  I did not care for the Constellation sound or the price and the Dags were expensive too.
So, did I fall in love with the speakers, not really.  But I liked them a lot and thought with the enclosed cabinet, I would not have as many bass issues as I had with the 5.2s even with their servo controlled powered adjustable woofers.
Then, decided I would need  different amps as most have said the S-5s would like high powered, high current SS amps.  So bought some 200W class A monos with 220,000 uF capacitance and away we go as I found a pair of S-5s being sold by a real gentleman on the west coast for a competitive number.
During my visit to Atlanta I did stop in at one other dealer to demo some Wilsons (Alexias?)that were paired with Mac gear and was not blown away.

rmasoni,

I would love to hear the Rockport Atrias and there is a pair being sold for about what I would want for my Magicos, but the dealer did not want to trade.  I don't blame him and then he would have to sell the Magicos and probably not make any money when all was said and done.

G-

All over the place is relative.  I asked about Vitus because a Magico dealer said the best he ever heard Magicos was driven by a Vitus setup.
He on the other hand is a Dag dealer.
When I asked a respected writer about the Dart, Vitus or Mac, he liked all but implied the Vitus would be the way to go.  Dart and Vitus used, Mac new.  Similar money.