off topic, but out of curiosity - why ogg (presumably vorbis) in favor of opus? maybe old devices or players, or just haven’t made the change yet?

opus is also a xiph project, and is almost entirely transparent at “128kbps” (it’s a misnomer for the q4 of vorbis), so it uses way less space for the same quality. I warmly recommend giving it a try if you haven’t already.