They both work well, if you are using PJ64 it works best, Azimers delivers the quality sound on PJ64, but Jabo's directsound plugin keeps PJ64 stable, after all it is the defalut plugin.
Azimers plugin is still better The .40 Beta 2 version works best. His new LLE .50 Beta 2, which just recently came out is better qualitywise, but isnt that compatible with as many games as the .40 beta 2 version