Style as a Differentiator

While interaction and informational aspects of user experience can be analyzed logically, the sensory and immersive characteristics of a user experience are inherently more subjective -- but no less important. Products can survive in the marketplace initially despite being crude, ugly or dangerous if they provide enough value. But over time, as competitors match quality, style becomes the differentiator. (Or price -- but only one product can ever be the lowest-priced.) What's the mood or feeling, style or genre that's appealing to your persona? What's appealing? What's pleasurable? What's memorable?