I always try to be fair in my evaluation of products and if there are negatives, make my readers aware. Honestly, the Dyson AM06 Desk Fan, operates like a dream and I could find absolutely nothing wrong or negative about the fan itself. The only drawback I could foresee is the cost. At $349.99, the fans are a bit pricey, but totally worth the cost. Plus, the price includes, free shipping and a two-year warranty.