The antonyms for the term "more low-rent" are "high-end," "luxurious," "sophisticated," "upmarket," "expensive," and "elite." These words denote characteristics that are opposite to the low-rent aspect, which is associated with something that is cheap, affordable, and basic. High-end refers to products that are designed for and favored by the wealthy, while luxurious usually describes accommodations, experiences, or products that are indulgent and lavish. Sophisticated and upmarket both suggest elegance and refinement in design and setting, while expensive speaks of a product or service that is priced beyond the means of the average person. Elite denotes exclusivity, implying that only a select few can access the experience or product.