so i've decided that i am going with the eGo twist, what i keep reading though is that they have a problem with dual coil cartos, so my question is: where can i find a single coil carto tank, a twist battery, and a charger....all in one place on the interwebs....that is of course unless i was wrong about the dual coil thing....i just don't want to burn my investment up by running the wrong stuff on it