I have recently installed armbian on odroid c2. -The burning the armbian image using etcher.io was surprisingly easy and agreeable
-gui bringup with a default desktop was agreeable too. ovo.fyi/lorem-ipsumovo.fyi/emp-mailovo.fyi/10-minute-mail
-the kernel version is more recent 4.14+
-the support for mali gpu seemed to announced on this version BUT the responsiveness from the web browser, the responsiveness from the media players was choppy.
When I installed the archlinux again:
-followed the archlinuxarm.org wiki steps for odroid c2. Sure it wasn't like etcher two step download and burn, but the number of steps was reasonable, under twenty roughly. -the bootup was faster -the gui desktop setup took a few more commands: pacman -S xorg-drivers xorg-apps xorg lxde-gtk3 emacs firefox -the kernel is older 3.14.79, but is responsive and the firefox is responsive along with the media player.