This holly is a definite "Wow" for me!   Ilex 'Conty' Liberty (trademark name) is a hybrid which comes from a cross between 'Mary Nell' and 'Red Delight' hollies and has a natural pyramidal form.  In late fall, the branches are smothered in bright scarlet berries which contrast strikingly with the deep green leaves.  Best of all, the berries persist into winter.