My experience with music distribution companies
I researched a number of companies for my music distribution. While I write all my own lyrics, I use Suno AI for creating the music/vocals for my demos. Because of that, only Distrokid and Symphonic met my needs. The only other company that came close, was LANDR, but that company had unacceptable, restrictive policies and would not refund me even though I never actually used their services. Symphonic was hard to use in the beginning. Their policies draw lines-in-the-sand that require you to meet what are only recommendations from the streaming companies. They require .wav files for your music, rather than otherwise acceptable .mp3 files. They require you to first, list your song with no specific genre or version, rather than allow you to list by what you use to organize your music. They are very picky! However, once you get used to them, Symphonic is fast in getting your music out--comparably to Distrokid. Symphonic is much cheaper than Distrokid, has much better analytics, and has much broader distribution than Distrokid. While Distrokid has the most user friendly release posting system, Symphonic comes in as a close second. If Symphonic wasn't so picky about submissions, I would have rated them higher. However, in any event, I rate them highest among all the services I reviewed. They are especially good for users like me that depend on AI for music demo production. If that's you too, go to Symphonic for your music distribution!