I have been using the old classic DSE901 for three years. VERY pleased because of the availability of parts like batteries and atomizers. I get all that from Awesome Vapor these days. They are "awesome", as the name states, at customer service. And, in my opinion, they have the best-tasting juice. But, by all means, DO NOT buy from Vapor Kings. If you have any problem at all, instead of trying to resolve the issue, they will tell you all the reasons it's your fault and not theirs. And then you will be out some bucks. That aside, the DSE901 for me has had the most consistent vaping action and throat hit. Plus, if the atomizer starts to get weak, I wash it in Dawn dish soap and hot water. After drying, it's like new- after the soap taste goes away.