I'm using an Ego pass through 1100mah with CE5 clearomizer, and want to buy a little upgrade from my current device. I was wondering which is better a joytech Evic, an Ego VV or Ego V V2 Mega? I was leaning to the evic because i can change the battery and learned that it goes up to 5.0volts, but the ego vv or ego v v2 mega goes up to 6.0volts. I'm not really into mods, i just thought that with changeable battery it's better than buying a new device every time it dies out. Please help find pros and cons of each device and which is much more preferable to buy.