Heil mics are very nice on guitar amps. I've got the PR35 and 40.-Will
I can't believe that no one has mentioned the Audix i7 yet. Its basically a 57 w/o the exaggerated presence peak....Maybe you could call it a "ribbony" SM57.
Okay, we get it, you have rare and unusual mics.Geez.
Just kidding, man.