Don't buy anything unless you can audition it first. The effects of digital cables are very system-dependent. With excellent modern equipment, it's been my experience that the differences among SPDIF cables are slim to none.
What connection is better depends almost entirely on your source component and DAC. Again, you will have to listen to make a decision.
What connection is better depends almost entirely on your source component and DAC. Again, you will have to listen to make a decision.