imho A is the best one for both amps....sounded most upfront and aggressive. needs a lowpass though.
D was a close second, but i prefered the rawness of A. should stick out in a mix moreso than D too.
between B and C it's interesting, as i could have sworn B was the 201 alone....so i'm surprised to see that it actually has the sm57 blended in. listening with the knowledge which is which it becomes more obvious though.
seems like the 201 has more lows and low mid rumble, whereas the sm57 has the classic "fizz" obviously. i'm surprised that they don't blend too well though....one could think that the 201 would fatten up the sm57 tone, but to my ears it's only taking away some of the brutality and impact.
btw, the rectifier sounds better to me