Better way to write linq queries

gistfile1.cs

// inline method
var students = (
  from student in RepositoryFactory.StudentRepository.Queryable
  select new { FirstName = student.FirstName, LastName = student.LastName, FullName = string.Format("{0} {1}", student.FirstName, student.LastName)  }
).ToList();

// using the let key word, looks cleaner
var students = (
  from student in RepositoryFactory.StudentRepository.Queryable
  let fullname = string.Format("{0} {1}", student.FirstName, student.LastName)
  select new { FirstName = student.FirstName, LastName = student.LastName, FullName = fullname  }
).ToList();