There's something about the open low E during the rising-on-the-A-string section that just bothers me on almost all of the amps. The Ironball was a notable exception, and it was probably because it just didn't have quite enough low-end definition to keep it super tight like the rest. Maybe it was the tuning, but something about that section of the riff was distracting. I'd have to go listen a third time to pick out which one or two mushed the notes together a little bit too.
I really liked the full-size Recto, and I really liked the JCM2000. Again, thanks for putting it together. Very cool idea.