Wyetech or Coincident Frankenstein IIs

I've got the Frank II's, and they are incredible. The choice of 300 tube is crucial (especially, I would think, with horns). Israel Blume suggested the KR "Baloon" tubes, and I've never looked back (I'm listening through his Total Victory IV's). I think Salvatore prefers the TJ Mesh Plates... I may try them some time if my wife lets me.
Call Blume. He's probably had the Unos (and Duos, Trios...) hooked up to the Franks. He's extremely knowledgeable and best of all, he's accessible.
I like lots of other amps, like Wavelength, Lamm, even inexpensive 2a3 based amps; but the Frankensteins are something special, especially at their price.

Coincident is far purer (less grit) and engaging. Sapphires have a SS-like edge artifact that is not appealing. I am an ex-Topaz monoblock and Onyx owner so am quite familiar with Roger's offerings.

Wyetech Topaz the best- does leading-edge transients like nothing else (have owned it- still have another SET 211 amp- love that tube), but then more $$ than the rest of your choices, plus you need a preamp with some 'body' to it. Frankenstein VERY transparent- be aware of that- not 'typical' 300B lushness...