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looks extremely good, possibly a bit to lacking spherical aberration for my taste, but i'm weird that way.
Then you really wouldn't like the PanaLeica 42.5mm f/1.2, which is essentially completely devoid of spherical aberration. The Fuji has some at f/1.2...essentially gone by f/1.8. At f/1.2 it's light enough that you can compensate for it on most images by a gentle contrast tweak, but still is flattering for portraits. It can show up a bit with white against dark, though.