i think one should divide the time half for iyun [deep learning] and half for bekiut (fast learning). Even though in the Conversations of Rav Nachman 76, we find the emphasis on just saying the words as fast a possible, and going on. In the Le.M vol. I, ch. 78 we see that the main thing is iyun (in depth learning). So clearly there needs to be both. But how much of each? I can see the need for both -especially in early ages, because when people do not get ''how to learn'' [How to really get into the depths of the subject] they never get it. When I was young, I also did not understand this (as i think most people do not). I thought, "What is the point of spending a few weeks on one page of gemara when I have not even finished the whole tractate at least a few times to get the big picture? But now I see that we people do not get iyun when they are young they never get it. So clearly the great litvak yeshivot that immerse people in iyun right away have the right idea.