I purchased a black one last year. This fan is very special - it actual makes the air cool. You will feel the fan blowing even 2 feet away. I usually keep it running in the mid power range to keep it completely quiet. Unlike the usb fans I've bought, this really makes a difference if you are hot.
I took this to our annual furniture wholesale show in vegas 3 weeks ago and my 2 sales were so grateful that I took this. The only problem is that I only had one and we had to take turns.
I couldn't find this thing in any retail store hoping that it would be cheaper. I considered the knockoffs but some forums say that the filter isn't the right size and most of the air doesn't even flow through the cooling pad. Anyway I bought 2 more from amazon for my family to get through the summer. Wasn't cheap ($107+) but it should be worth it. Can't wait to see how the new version does.