Lots of great wisdom has gotten me this far, lucky enough to start with an Ego and add a Riva, and the joy of avoiding the misery of mall kiosk and 7/11 trauma. I do have a question of the plain 510's. I work from home and it seems the only time I'm away from the computer is to sleep, 12 hour days being the norm. I was considering getting the somewhat lesser priced 510s for use with a pass through during my work hours, saving my eGo and Riva for nighttime TV and times away from the house, with the advantage of being able to swap atomizers, cartos, etc. I'm more into the vapor than the throat it, so would this be practical, or will the 510 seem like too much of a backwards step for someone who only knows the eGo/eGo-like?