I guess whether you pick this or the Nikkor (or indeed one of the few offerings avalable in the Sony E mount) is not exactly a choice that can be made at will. :-)
BTW there's the new (and crazy) Sigma in the E mount... guess now we know why there wasn't a dedicated 135/1.8 Art in that system. :-)
Speaking of this Canon lens, I kinda expected a higher mark and a HR badge.
P.S. This from the boken fringing chapter: "...does an very job in this respect..." (a word missing?)