Dear aspirant !!

Hope you are doing great ! It depends on the students ,if you understand the concept from old lecture then follow them if not then follow Arjuna jee . However in my opinion the old lecture can't be compare with anything.  They are really - really awesome . I will recommend them to you . But if you don't understand the things then quit it ,its just a suggestion not a burden or forcefully statement .

So choose accordingly .

Hope you understand !