SPDIF Digital Cable Recommendations

I am looking for a SPDIF cable to run between a Music server and DAC.  Do you really need a high-end cable in this case?  Currently, I am running a $34  SPDIC cable and the music is actually better than running a higher-end USB cable.  BTW, the DAC is a Lampizator Pacific and the Media Server is from Lucas Audio LDMS.  I definitely like the sound of SPDIF vs USB.