Okay, i'm actually really really lovin this ECHO, love the draw, at first it was kinda airy, but as the atomizer warms you get lots, and there's alot of vapor, its actually alot like the igo, but i like it better, more stable draw, love the automatic hit', i can take as much or as little as i want, without playing around with a button. I think this is more like an updated, better working version, of the IGO. if that makes sense. If i had to choose only one, it would totally be the ECHO.
hope that helped!
Meems