Air Tight ATM-300R or Shindo Cortese 300B

Perhaps slightly off topic and maybe I need to start a different thread but let me pose a quick question on the F2A.   Originally the Cortese F2a was a single 6aw8a tube per F2a tube, and went through an evolutionary change years  later to dual tubes per f2a tube and a few circuit updates. The current model, uses a tube rectifier on top of the chassis and different input/driver tubes altogether and was designed by Takashi Shindo.

Can anyone provide listening impressions between the current and immediately prior version of the F2A amp?  Shindo moved the retail price up by $2,500 during the last version.     

@dingo,
The more I contemplate your comments in this thread,  I believe that the Shindo 300b is the right choice for you in the long run. You are a music lover who loves jazz. That wonderful  genre I suspect would sound  fabulous via the Shindo driving your horn speakers.  Just a hunch 😊.
Charles 

Charles,

Thanks.

So far I think Shindo is leading this "informal poll"... lol...

Best.

Air tight 300r felt too laid-back for my taste. Lacking excitement and fire within. 

Audio Note UK sounded too much of their own house sound. A bit warm and slow. 

Wavac, Border Patrol & Shindo are very good

Can you avoid the terrible taxes by buying used?