>http://ayende.com/Blog/archive/2010/01/05/nhibernate-vs.-entity-framework-4.0.aspx
>
>There isn't much of a comparison. Microsoft should just scrap EF and adopt NHibernate as their official ORM solution.

Terrific. I just received an EF book from Amazon yesterday, planning to read it on the train. Maybe not the best investment of my time at this point?