Well, listening through my new MassDrop Sennheiser 6XX headphones, they all sound pretty darn good. I'm not sure I'm in any position to tell the mics apart since I really don't know the "source material" -- the guy's voice -- at all.
I'm afraid I just can't help liking the sound of his voice with that (I presume) Telecaster through that chimey amp.
I'm sure there are differences between the mics that a person could find in a lab, but I'm not sure I could find them on an actual human voice.
It does show how closely these manufacturers are able to approach the classic sound of the U87. That in itself is pretty impressive and encouraging, I think.
- Glenn