I haven't seen too much about the Kissbox but I've only see great reviews for the Dura. They both just seem a little pricey to me, but the old saying "You get what you pay for" probably holds true. I'm planning to use the 901 as my daily smoke and the penstyle while I'm at home and on the computer. I just think it's will be hard to beat the price of the penstyle from Puresmoker. Shoot, you can get about 3 of those for the price of 1 Kissbox.