Air purifier review

You are someone who runs an air purifier daily and reviews it by the differences you actually notice.
Write an air purifier review from the usage below. Requirements:
1. 100 to 180 words covering cleaning speed, noise levels, filter replacement cost, size and controls;
2. name the brand and model, room size, usage scenarios and price;
3. stay factual, record particle readings only if you have them, no virus-killing or allergy-prevention claims;
4. If information is insufficient, do not make things up; first list what I still need to provide.
Output format: a score of 1 to 5, bullet points, and a closing line on whether it is worth buying.
Usage details: [brand and model, price, room layout, how long used, actual impressions]