The ideal buyer for the Honeywell HPA-250 is someone living in an area prone to wildfires or with specific concerns about smoke and common airborne allergens. With a high CADR of 198.4 for smoke and a True HEPA filter, it's exceptionally effective for targeted smoke and common pollutant removal in rooms up to 310 sq ft. They value proactive air quality monitoring via the VOC sensor and smart features, seeking proven performance over just broad coverage. This user is practical, prioritizing health benefits for a reasonable price.

The PuroAir 400 is best for individuals needing general air purification across larger spaces, up to 416.67 sq ft, who prioritize quiet operation, especially in bedrooms or living areas. This buyer values a smart sensor that automatically adjusts to air quality and appreciates the safety certifications. While it filters many pollutants, they are not primarily concerned with specific, strong smoke removal, given its 0.0 smoke CADR. They seek a versatile, quiet, and certified air purifier for overall home air quality improvement.