I consider myself pretty unlucky, as gorefiend trinket hasn't dropped for me yet. Luckily I was able to get my hands on all the other ones. I currently have heroic Archi trinket, Heroic EDH, Heroic Cleave trinket and warforged Mythic Horn of Screaming spirits.
Atm, I'm using Archi/ Horn of Screaming Spirits. However, I've been reading that Cleave trinket, in certain situations is superior to Horn. Is this true? And if so, why?