I have tested many many high end lenses and still own some famous leicas like the 100APO, Summilux 50 1.4 etc...
Generally I do not like canon L lenses (colors, sharpness, micro-contrast )
EXCEPT this one. It is IMO the best lens canon has ever made <200 mm .
Wonderful bokeh at 1.2/1.4 and spectacular sharpness even à 1.2 (but you'll see the magic around F2).
Autofocus technology is great (and slow with this one but who cares.) but you'll have better results (did I say BETTER?) when switching to Manual if you want the ultimate Image Quality.
I hope someday Canon release a 50 1.2L too;
I will probably resell my 35 1.4 and keep my leica lenses... the 85L will be the only canon lens in my list.
A legendary lens.