Based on the great reviews, I sought out and bought the Revvo tank from a reputable retailer (Coval Vapes). While the flavor and vapor production are great, the tank leaked terribly from the air vents. Because the location of the leak is so close to the coil, the liquid leaking out was scalding hot. Twice with vaping in bed I received painful burns to my chest and mouth. I contacted Aspire about the problem and they asked for my receipt (which I provided) as well as the batch number and security code. These must have been on the outer box cover, which I discarded right after my purchase. When I told Aspire this, their response was that since they couldn’t verify my tank was an authentic Aspire product, they could be of no further help. As if someone has tooled up to counterfeit a $25 tank! Either I bought a defective unit or the Revvo has a serious design flaw. Either way, the customer service rep I dealt with just sucked.