The Levoit Core 300 is being reviewed and compared to other air purifiers, including the Levoit Core 300S and Core 400S-P. Some outlets have tested multiple air purifiers, including the Levoit Core 300, to determine their effectiveness in reducing allergens and pet dander. The Levoit Core 300 has received a significant number of reviews and a high rating, but it is unclear how it ranks compared to other models.