I would recommend Arif for someone who is interested in covering the CFA curriculum, as opposed to Kaplan for someone who is short on time and wants to breeze through the material.
IMHO I think Arif kind of dives in to little little areas in the curriculum while Kaplan might not cover, so I think Arif is better.
My first attempt I did with Kaplan and I felt that it was not covering the curriculum in full - though the delivery of the material is better than Arif. Arif is a slow grind cos he keeps going on and on, but I think he helps put the whole syllabus in perspective
I felt material in derivatives in Arif’s is not that strong - may not be sufficient for someone who s a bit lost (as me)