I'll add my review. I started with Volts, so there's nothing to compare them with, but they all work fine. I did notice better vapor from my green battery. It's not a big difference, but it's there. I guess since all the others are the same and do well enough, I consider the green one a special case. The green one is unsealed, as are all of my short batteries. First, I bought them when that's all they had, and then I added to my battery collection, which is when I got the green one, when the unsealed ones went on sale because SI was stocking the sealed autos. I got one long manual battery just to see how the longer length and the manual switch compared, and I like the vapor from that. It's easier than having to drag on the carto just so. But I still use my short autos. But when I went to refill cartos, I didn't drip with the battery attached, and first I vaped a little bit on my manual so if there were any drips, they wouldn't ruin my unsealed batteries. After a little use, then I switched the cartos to the unsealed autos, and they worked fine. Maybe they would have from the start, but I thought I'd use the manual on any new cartos I just filled till I'm sure. It gives the manual a specific job. I'm on the fence about whether I prefer manuals or autos. Yes, you have to remember to press the button, and sometimes i forget and treat it like an auto till I realize which battery I'm using. If I just had manuals, I bet I'd just get used to it. Then again, my green battery works well with less specific draws, so who knows? Are all the other autos deficient and I just don't have the experience to know it? They work OK and hold their charges, so I never thought anything was wrong with them, but that greenie is certainly a puzzle. Maybe I just lucked out on a superior battery -- and the dark green color is awesome. After all, if there are duds, maybe every once in a while there's one that's better than the others, but no one complains about that!
