I'm not a newbe, in fact I've been an avid vaper for three years, but I just can't get my brain around what constitutes the various devices. I know what a mechanical is (I have two) and I know what a vv and vw is (I'm getting one as soon as I get the cash), but what is an ego and what is a evod? My go to device right now, A Majestic from Madvapes, is the best I've used yet, but I have no idea what kind of device it is. Can someone help?