Gyarados & Magikarp, Charizard, Nidoking, Gardevoir, Ninetales, Primal Groudon, (Mega) Rayquaza, Cresselia, Rotoms are cool too, it's gone like 80s or something
I generally like a black version of a shiny (i.e. charizard, primal groudon, and the rays) or something that is distinctively different from the original (nidoking, ninetales look majestic af)