(b) RAV MOSHE MORDECHAI KARP, in his notes to the Rashba (Oraisa edition)...
What is the Oraisa Edition and in what way is it materially different from a standard edition Rashba?
Joel Shandelman, New York-Monsey-USA
BRAISA Publishers tried creating a new set of annotated Rashba 7 years ago. They only succeeded in printing 2 volumes or so before seeing that they couldn't keep up with the other publishers of annotated Rashba (e.g. Mossad HaRav Kook).
The notes in this edition are quite extensive and helpful.