I use the cheap, non-LR atomizers from Madvapes in my RoughStack w/extension all day at 6v with no problems. I dewick and debridge and drip exclusively. My atomizers are lasting far better than I thought they would. As previous posters have stated, keeping the coils wet is very important. It is pretty east to figure out when you need to drip again... When the debridged atomizer is wet, it shoots a few droplets of searing hot e-liquid out of the drip tip when the button is first depressed, leaving vapor contrails. Then you take a drag. When you hear the hissing but no e-liquid shoots out, don't hit it. Wait for it to cool and then drip more. My atomizers died from dripping onto the still-hot coils, causing them to crack. I realize that this is a pretty low-tech/ham-headed method, but it works for me. More importantly, it has shown that the atomizer will function and last very well if it is kept nice and wet. Don't expect a normal atomizer to wick fast enough to feed the hungry demons of 6v vaping. That's why I drip at this power level.