The -opengl-hq option is a great option to easily get acceptable quality playback without the hassle.
But even still, Windows is so much ahead in video playback by just a hobby of one guy (Madshi, software being Madvr) that it is a shame to Os X and desktop linux. FRC (smooth motion without any of the soap opera effect people hate) completely removes the need to use 23.976 Hz on your monitor, so you can use what your monitor is build to use. With Jinc + anti-ringing filter as the scaler, your image looks gorgeus even how much you need to upscale it.
These are the reasons my HTPC still runs Windows even though I love mpv and would like to change but my eyes can't make the jump just yet.