Since I only know and have used the Schoeps M221B, that would be my first choice. I have posted here about them before. We were recording acoustic guitar and we were in the control room monitoring. We kept hearing a ticking sound and finally figured out that it was the wristwatch on the performers hand. Sensitive microphones they are. In our experience they have beat every other small diaphragm microphone that has ever existed - minus maybe the Neumann KM56, which we also know and love dearly. Good luck with your decision!