<p>Do you have a better chance of getting a good essay score if you write about something unique rather than the regular stuff like writing about subjects that you know are available to everyone and a lot of people are going to be writing about it.</p>
<p>Ultimately it depends on whether you're a good writer, but I'd say so. Imagine being an adcom and reading dozens of essays a day - you'd get so sick of the same topics. S/he'd probably pay more attention to a unique essay.</p>