Why Henle? And what do mean as regular editions?IMO right now the best editions are:Barenreiter Del Mar if you do not need fingerings - best critical UrtextABRSM Cooper if you need fingerings - best Urtext performance editionPerahia edition is not critical, and its only selling point is Perahia fingerings which are not for everyone. Not to mention that that it is not complete yet.
So the Perahia Henle has updated scholarship on the text as well?