I still hit bugs with Arch and I know they can hit Ubuntu as well[0], for instance, If anyone can connect to an amazon echo as an audio device I'd like to know what version of bluez and/or pulseaudio they are using, as it stopped working after an update a while ago...
[EDIT] Though to be fair, I think they did call out bluetooth as one of the things Ubuntu was going to focus on in their next release IIRC.