Do you know of an alternative that allows custom music and sounds? I haven’t found anything that works well.

Jeez, were one of the two devices 10 years old? That hasn’t been my experience for a long time (except the duplex audio issue. I can’t believe it’s still terrible.)

Then again, I mostly use BT for the convenience. Being able to do yard work with zero wires is amazing.

There is the ifixit repairability score.