The sound of Zaphir Twilight is beautiful and peaceful - unlike any other chimes I have heard. I didn't like Koshi - I found the sound to be too rough, so I wanted to try out something different, and Zaphir really surprised me! I highly recommend it - I even used it to put to sleep my newborn baby who absolutely loved it and later also played with it. Very, very beautiful sound, I also use it as a part of my sound-bath meditations which I give.