deinitely horcruxes r the worst as by making a horcrux u r splitting ur soul into various fragments in the hope of becoming immortal.this splitting of soul cannot be desired by a sane and wise person.
On the other hand,hallows can be used by a non evil person like harry(who had invisible cloak) and Dumbledore(who had unbeatable wand) without the intention of harming others.
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5:23 PM on August 08, 2007