[plaguepilled]

It really depends on what you mean by ease of use. It's about as hard as Gentoo to pick up, but it is the easiest one to maintain imo.

Looks wise, they're all the same (bar mint) since they all use stock GNOME and KDE.

Ecosystem, as in the specific tools available to make things a turnkey experience, I'd say NixOS takes care of you really well and is on par with arch and Debian.

All three of the above will vary with individual experience though.