A deep dive into the Rebbe's position on Nusach Ari/Alter Rebbe, the unique advantages of Chabad Nusach, whether switching from Nusach Ashkenaz or Sefard to Chabad's order of prayers is permitted, and what to do in a shul with a different Nusach.

Part I: The advantages of Nusach Chabad

Part II: Switching Nussach & Davening in other shuls