I only recently bought the Talmud Eser HaSefirot set published by Rabbi Gotlib and can’t hold my excitement. Besides the original text of Baal HaSulam, the book includes key comments of RABASH that were translated from his lessons + many charts that make the learning much easier. I highly recommend the set for anyone who wants to study the material in depth – they have free International shipping and the books arrive from Israel within only few days.
Here is one shot that I made from the book – has bunch of my handwriting. I picked this specific chart as it summarizes the key aspects of Kabbalah that was taught by Baal-HaSulam. Click on the image to enlarge