Since default sharpenings didn't get me satisfying results with converters tested, I have tried strongest sharpenings possible that still don't provoke excessive halos and ringing. Sometimes this meant highest settings possible.
Notice lowest resolution with SilkyPix, highest resolution with Raw Magick Lite, lowest noise with Capture One and highest with NCE using USM at 5%. Best overall performance (if processing time is taken as well) is still achieved with Nikkon Capture Editor.