Asp.Net MVC and Entity Framework Architecture -

I am currently working on a large project and am currently at the stages of the plan. I have read a lot in various ways suggested for development, at this time some things that divide the team when using the entity framework, the classes should be passed through remuneration layers so that one view accepts a unit framework class Can these sections be mapped to the BLL classes and if such a point (the controller or library) should be done on this?

I am interested in hearing some positive and negative comments for every solution.

This is again one of those questions which is true of actually I do not have a wrong answer, its personal taste is in fact, personally, I choose to use DTO or interface while passing data to scenes. I do not try to cross the different layers of my application near the unit objects, they are strictly limited to DAL or if I have to pass it through one layer, I will never use an interface anytime. I will not do with concrete type.