Khaled Hosseini is indeed a master-mind of social-based novel. However, I did not enjoy this one as much as I did with The Kite Runner and especially A Thousand Splendid Suns.
And The Mountains Echoed still potrays social-issues in a pleasant way and still contains a lot of moral-stories. Yet, for me, the stories in And The Mountains Echoed are slightly "too much going".
And And The Mountains Echoed is still a good book and I cant wait for upcoming masterpieces by Khaled Hosseini.