Michael, I have spent a little time today with the new capsules. We have found the KM-201 microphones with the cardioid capsules to be extremely satisfactory when recording piano. Preliminary results with the super-cardioid capsules suggests that the imaging is even more precise when recording piano. Also, the response seems smoother and more compatible with other instruments.
My wife and her piano duo partner have recorded the Brahms Hungarian Dances using the KM-201s with fine results.
http://www.kantorskipopeduo.com
I wish we had used the super-cardioid capsules!
My son, Michael may well contact you about the purchase of 201's. His websites are below.
Thank you again, and I hope we might meet sometime in the future.
David
http://www.michaelpopedesign.com
http://mikepopejazz.com