Verity Parsifal or Magico V3 or Wilson Benesch ACT

I think what the WB dealer means is that since Benesch are made of same material as Stealth bombers, they would do the disappearing act much better....some people should fly UNDER the radar screen of marketing non-sense and partisan bigotry.

Given the OP's choice, I would select the Pasifal all day long. It is a very natural sounding speaker with beautiful tonal purity.

There is nothing natural about a speaker that is 6-8db depressed along its entire presents area (1K-7K). Have a look at http://www.soundstagemagazine.com/measurements/verity_parsifal_ovation/. Yes I am sure it is pleasant to the ears. So is ear plugs.

Vangoughear

ACTs cabinet secret is, in my opinion, not the use of layers of carbon fiber, but the use of a cabinet made of a sandwich of composite materials with a core of high density foam. This ultra-light external structure instantly absorbs the energy generated from the drivers.

Nonsense. You can’t eat the cake and have it too. It you are stiff (Carbon) you are not absorbers. You may add absorbent material inside the enclosure to deal with drivers back waves but it you depend on the Carbon skins to do so, you got a problem. It is not a surprise you do not see any WB measurements online. Unfortunately, for WB, Stereo Sound in Japan has measured these in issue 156. Quite a train rack with severe 2nd and 3rd harmonic distortion through the entire frequency range. That can be a resolute of many things. Poor enclosure design can be one of them.

Dhaan

You are mixing two separate but very important issues.
Number one a cabinet should be very stiff to avoid resonance. Resonance as when a violin resonates when the strings are plucked. Most speaker manufactures boast about their thick 3/4" mdf walls with some having 1 1/2" front panels, all this to avoid cabinet resonance.

In many instruments resonance is a good thing. In a speaker cabinet resonates is not so good. At what resonance to you want your speaker to "sing"?

The second issue is eliminating the rear waves of the drives which carbon fiber is also excellent at achieving. This is not the same as cabinet resonance.
Two different and very important goals that WB manages to achieve.

Tuboo
In my opinion WB will take on the sound of the upstream electronics. At our shop we emphasis that point and marry them with deHavilland electronics. If your amp/preamp are analytical then you will get that kind of sound. Any audition/purchase of WB should take that into consideration.

Sounds_real_audio

You are way over your head and insist of making a fool out of yourself. I would gladly enlighten you but you do not seems to be the kind who seek knowledge. It is a lot easier just to mumble some nonsense to your clients and apparently the world. A common phenomena in this industry. What a pity.