Entity Framework and NHibernate

Question

Hi  All,

 

 

I   going to develop  project in MVC5  Asp.net   and  i am using   SqlServer2008r2     data base ,  but  i  am  confuse to    which ORM tool (Entity Framework or NHibernate) should i used  in my project .  should i used      Entity Framework 6 or NHibernate     Please Suggest and  give some  valid reason  for choosing        Entity Framework  over  NHibernate  and Vice versa.