Considering that I wouldn't own a Vitus or Dagostino on any speaker, I can't agree with your idea there.
Regarding CAT, we did a shootout between the JL2 Signature and NAT SE2SE and while reasonably close overall the SE2SEs were clear winners...on Apogees.
Also the VAC 30/30 was no contest to the VA350 and Diana on a couple different speakers (ref3a and Rigolettos and La Bohemes and ThielCS3.7). The VAC handily dispatched the Octaves and a Karan Integrated.
I also heard the VA350 outperform the Janis Defy7 mkiii with siltech on focal mezzo utopia be speakers near London and the Janis is one of the better sounding PP tube amps I have heard.
You haven't heard Diana properly either on conventional speakers...it is a beast.
I have had the Nat magnetostat SE at home with the Magma SE next to Jadis on Verity. I have heard the Nat apogee system you mention, and another with Nat and full range. These don't sound anything like apogee systems to me so let's just disagree. Either we have different tastes here or you have a SET bias. The KR, btw, probably have that drive because they have a transistor in their path.