I've always had to wonder just what people are doing to their atty's that causes them to fail so frequently... tons of posts in the forums stating that they're happy when they get 3 - 4 weeks out of an atty, and substantially lower times with cartomizers (many are claiming to only get a week or so with them)...
I just don't get it. I've only had 2 510 atty's fail on me, and both of those were because of user error - specifically, with one I fell asleep on my PV and melted it down, and on the other I broke the coil while trying to adjust the wick that had somehow worked its way into a weird position. My other ones (2 primary and 2 backup) have been very reliable for over a year of heavy daily vaping with minimal maintenance. I usually clean them about once a week or so by rinsing them out with hot tap water for a minute or so, blowing out the excess water, then dry burning until they glow without producing any vapor.
Maybe I'm just lucky