You had me looking at Guzheng yesterday on eBay. I wouldn't know which one to get and probably don't need another instrument. I love it on Tao of Love. I used the original track on my travel video about our trip to Japan and Korea.
Thank you for your comment. I don't know the exact name of the instrument, but it is commonly called chinese koto (not japanese ) and I bought this on auction site for almost $100. I suppose that you might find it at the auction easily. Good luck !