Just trying out my first 2 packs of these. With my first one, I have the same problem with the booster. Get nothing with this mega dual coil - atty won't activate. Just swapped out for the smokey and the booster is working as usual. I'll try one from my other pack later and pray it works.
Asides that, my first impression is that these are pretty sweet. Hits pretty hard without the booster, and I normally use the booster exclusively.
The other issue is that it leaks a ton of liquid when filling, but I just put a 30ML bottle juice cap on the battery end, then suck the juice up with a syringe and put it back in the bottle, so even though it's messy I'm not wasting much liquid this way. Doesn't appear to leak in use, which is better than the CE3's which we all know are a bit of a maintenance nightmare.
I'm a smokey lover but if I get one of these to work with the booster this may knock smokey's out of #1 (though I'm secretly wishing for a mega smokey without the bung and leaking).