I started with a manual battery and liked it until I tried an auto. I much prefer the auto battery. A good one doesn't activate by sound or wind, it only activates when you actually draw on it. I ordered my batteries from Litecig Usa. If it has a cut off, I haven't experienced it yet and I habitually take slow, long drags. I've also never had them come on by themselves because of loud sounds (and with a brother who makes me listen to him play drums when he finds a new song he likes, he'd have definitely activated them if they were the sound activated batteries, drums are LOUD! Lol.) As for the primer puff, one drag is all I need. I get a little vapor on the first hit, and lots of vapor by the second hit. I was scared to refill my cartos because of many saying how easy it is to kill an auto battery if you overfill, but I read somewhere up here that as long as you don't see any juice in the center hole of the carto, you should be fine. I almost always see juice in the hole after refilling so I blow out the excess into a tissue until I can see through it and my batteries have been fine so far. The auto battery is much easier for me, I only bring out my manual batteries if I want to try out a new flavor without wasting a cartomizer since I can drip directly on the atomizer. It's all a matter of preference. If you've never tried a manual battery, I'd find a cheap kit if I were you so you can see if they're better for you. Besides, it's always nice to have an assortment of batteries. I know I have back-up around if my autos all decide to die at once. (Perish the thought!)