I am using both in combination, lecturio gives you conceptual approach while Marrow prepares you for the PG Entrances in Bharat.
Marrow is slightly weak in giving concepts in depth, but it is best in giving the needed information to approach a PG question in one of the best way.Contrary Lecturio’s lectures are so good for concepts and its Qbank is too good for Case Based study. Also it has features like spaced repetition which is extremely useful in learning the studied part.
So choose according to your need and time space.
Matthew Bailey, Medical student
Source: Quora Digest