From a performance and sound quality standpoint, there's no question that a class AB, or better yet a class A amplifier would be your best choice. The only reason to use class D is high power density and better efficiency.
Class D pros:
1. Higher power density (both in size and weight)
2. Higher efficiency
3. Potentially lower cost
Class D cons:
1. Limited power Bandwidth
2. Lower SNR
3. Higher THD
4. Response that varies with load
5. Higher circuit complexity
6. EMI/EMC related issues