Welcome to Vapor Talk! As Chris said, you can't go wrong with an eGo. I would go with the manual button though - it's not as cumbersome as you may think... you get use to it quick. I haven't tried the eGo auto batteries, but my early experience with some regular 510 auto batteries wasn't good. They started out great, but it didn't take long before I had issues with them not activating and eventually they stopped working completely (I only used them occasionally, so they weren't heavily used). Since they are activated by the draw of air through it, they are not sealed and juice can leak inside the battery unit. I believe this is what happened to me - juice got inside and clogged up the sensor.