ok, I'll reveal this one I think.
as most of you have guessed A is the 201 and B the 57.
I reallly like the aggressive midrange bite the 57 has..the 201 is a bit lacking in that departement.
the 201 sounds bigger and wider though..for solo'd guits I prefer A but I see B winning in a dense mix....
A reminded me more of the depth and biggnes something like the Gojira twoaf has...kinda condensor-like but still with the qualities of a dynamic mic.
I'll certainly combine these mics in the future for some stuff to get a deeper lowend to the 57 flavor or to add midrange to the 201....
I'm definitely glad I found and tried this mic cause I like it better than any other sm57 competition so far (better than 421, 906, royer, 414 etc for my taste). it will not replace the 57 for me (I'm a die hard 57-fan), but I can definitely see it being used for another flavor and/or more 3d in the guitars.
I really like this mic...much better than I expected