The CK93 is a really good microphone that can really suprise you with its usefulness. I have used it on Electric guitars, acoustic guitars, as drum overheads (with many different stereo techniques), on vocals, on piano, on flute, on nyckelharpa, on violin and on french horn and so on. On all of the aforementioned audio sources it has sounded fantastic so it really is a good microphone and no one trick pony.
It is a very clean sounding microphone but I still find that it has quite a special character and feeling to it, which I find enjoyable.
I can't complain about the build quality either!