I am new to all of this, but have tried the 901, 801 and Vapor King. After watching bizzybot's review I ordered from Jason. I just got my 510 today and so far it blows them all out of the water. I don't know if it's the warm vapor or just the amount of vapor it produces, but this is as close as I have come to an analog experience. Don't know how it will hold up, but this is by far my favorite. It lives up to it's hype, unlike some of the others. Thanks Jason for the great price and excellent service. You have a new customer.