Levoit Core Mini

Pros

• +True-HEPA filtration in a 6.5-inch desktop unit
• +USB power makes this the only travel-capable purifier in the guide
• +Quietest unit in the guide on low speed
• +Cheapest entry point to true-HEPA filtration
• +Compact 6.5-inch height

Cons

• −Personal-zone coverage only — not a room-purifier replacement
• −Small filter means more frequent replacement than larger units
• −No air-quality sensor
• −Build quality reflects the price point