My Fuze+ can't play Opus files properly. I get cut-outs every 2 seconds, and the interface becomes unresponsive. Another Fuze+ user confirmed that.My Clip+ seems to do fine.
... in the meantime, sticking with vorbis q2, fully transparent on my gear and is the only codec so far that gives that magic 10% file size with no audible degradation.
Oh hey I wasnt cheerleading, just saying until opus support is more widespread/finalized im sticking with vorbis because its built right into android, which is pretty much all I use. Apple AAC? iTunes? Good god no thanks. Once opus is matured and google bakes it in Ill be on the bandwagon myself!