When I first got to Shar Yashuv [a very important Litvak Yeshiva] I had seen a small booklet that was based on the Conversations of Rav Nahman perek 76 about learning fast. [It was emphasizing going through many pages of Gemara every day--But not just that bit having a few sessions also in the Midrashim, and the Yerushalmi and Rif and Rosh etc.] But when I mentioned this to Motti Friefeld, he was emphatic about depth learning with lots of review. Especially the idea of ten times  review of everything one learns. [That idea he got from his father the Rosh Yeshiva Rav Freifeld. ]And I am beginning to see the wisdom in that idea of review.

 If you are doing a few Tosphot or a long piece in Rav Haim of Brisk or Rav Shach, I have found that reading through them straight and then again the next day and so on and so forth for about a month is a good idea. But When it comes to Gemara, there I found just plowing through the whole tractate with Rashi Tosphot and Maharsha seems best for me. As for the natural sciences, ten times review seems to work best, but only after I have gone though the whole textbook first just saying the words and then going in until the end.  Then going back and doing review