Quick answer
River Oaks generally wins for luxury high-rises, premium shopping and restaurants, River Oaks District, broader apartment selection, and a more formal established-professional lifestyle. Upper Kirby is better for renters who prefer a quieter, refined central setting, Greenway Plaza access, selected mid-rises, and a lower-key atmosphere. Westheimer is a useful practical divider, but property marketing overlaps and neither district is uniformly walkable. The exact address, management, commute, and route to preferred destinations matter more than the label. Lower Heights may fit better when recent-graduate social life and value are the priorities.
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