Controller vs AbstractController difference

controller.rst

@@ -146,11 +146,14 @@ and many others that you'll learn about next.
 
 .. tip::
 
-    You can extend either ``Controller`` or ``AbstractController``. The difference
-    is that when you extend ``AbstractController``, you can't access services directly
-    via ``$this->get()`` or ``$this->container->get()``. This forces you to write
-    more robust code to access services. But if you *do* need direct access to the
-    container, using ``Controller`` is fine.
+    What's the difference between ``Controller`` or ``AbstractController``? Both
+    provide the same helper methods, but ``AbstractController`` is more strict: it
+    forces you to explicitly declare your dependencies before you can fetch them using
+    ``$this->get()`` or ``$this->container->get()``. This is considered a best practice
+    as ``Controller`` requires services to be public to do the same. But if you do 
+    need direct access to the container, using Controller is fine. Learn more about 
+    how to subscribe your services in the 
+    :doc:`/service_container/service_subscribers_locators` article.
 
 .. versionadded:: 3.3
     The ``AbstractController`` class was added in Symfony 3.3.