I have been using a Volt mini (not X2) for about a year now with blank cartos, filling with Johnson Creek VG juices. I want to branch out to a tank-type system, since I'm tired of refilling cartos 3 times per day and the flavor degradation with the filler in the cartos. I have been doing lots of reading on this topic and have yet to find any definitive answers. I ordered two Nano clearos from SI, but they both leak fluid onto the battery, necessitating removing the clearo from the battery every other draw to clean off the top of the battery and blow out the air hole. I have looked into the X2 clearos and the T3, but there are too many reviews about fluid leaking on the battery for me to feel comfortable spending more money experimenting. Does anyone have any recommendations about clearos that don't have these leaking issues?