Koren came out with a KSS version in 'nusach Sefard.' Is this the nusach of ha'Ari? I'm not too familiar with nusach Sefard/nusach ha'Ari. I like Koren's layout and aesthetics, and I've used their ...
Lubavitch prayer books include the words אָב הָרַחֲמִים where other prayer books have אַב הָרַחֲמִים (specifically, in the amida of musaf and mincha of Shabas Shuva, and in a prayer said after ...