Flatpak works much better for me on Ubuntu 18.04 with vanilla Gnome on Wayland: the Snap packages don't appear in the Gnome menu (until you launch an X session)

Flatpak works much better for me on Ubuntu 18.04 with vanilla Gnome on Wayland: the Snap packages don't appear in the Gnome menu (until you launch an X session) and some Snap packages don't work at all on Wayland. Also, Spotify is updated much more often on Flatpak hub than on Snap.