First of all, congrats for the excellent work mounting Zeiss optics in Leica thread mounts, keep up the fantastic work!
Second, I was a tad responsible for the mess created on that other Leica thread, but, was it really that off-topic?
Weren't the Sonnar 50mm f/1.5 and the Nikkor 50mm f/1.4 direct competitors?
Both lenses don't share the same optical design?
Isn't it the performance of the optics similar in almost everything?
My example was more of an indirect/hiden hint, to go for the Nikkor optic. Maybe I need to hurt the feelings of the Leitz guys and put it straight on the table, Go Zeiss always, LOL.