You know, that's a great question. I've just defaulted to the m201 at home (it usually stays on the mic stand ready to go for snare top) so I haven't done much comparison. I will say, bleed isn't an issue for me there. I do have old 50's Zildjian A's though so they are pretty light, so with a heavy handed drummer and heavier cymbals maybe I would feel differently.

The biggest thing I noticed is how much proximity effect I get with the m201. Great for weight, but can sound a bit bloated in solo. Once the overheads and snare bottom are there, I really enjoy the fatness and authority. Maybe I should consider pulling the mic back for a more natural tone though, which could introduce more bleed, which is maybe where you are currently?

If I would to only have a single snare mic, I think I would choose something with more presence than the m201. Mine is an older model (80's) which I have read some describe as "smoother" than the newer models, so maybe that's part of it as well. In solo, turns out my ear likes a boost right about where an SM57 already has one. But again, solo isn't the whole game, and in context the m201 adds weight and authority.

Incidentally, I got an old M420 as the bottom snare mic to compliment it, and it's basically half of an m201 but with a low end rolloff (so sort of half of the signal as well). Works a treat on bottom snare because it's small, hyper cardioid like the m201, sounds like an m201 but the lowend rolloff takes the kick out of the equation. I find they pair well together as a top and bottom pair.