What fake diamond looks better?

Could you please elaborate on which fake diamond appears more convincing? Is it the one with impeccable clarity and impeccable cut, mirroring the brilliance of a genuine diamond, or perhaps the one that boasts a more intricate design and intricate coloration, meant to mimic rare and exotic gemstones? Additionally, are there any specific qualities that you believe set one apart from the other in terms of their appearance and how they might deceive the average observer?