I have now 5 of these nebulizers that the much more expensive in no way inferior in design and quality: they are convenient to fill well (with, but also without additional perfume Hopper, I have both tested) and especially through the inner glass container of higher quality: excellent value for money. In addition, I have a very good experience with the customer service: As the fifth atomizer by post with pinched cap arrived with me, I got a replacement without hesitation, after I had contacted and sent pictures of the damaged cap. Here agree quality, price and customer satisfaction! What more do you want? :-)