My one and probably only ever experience with the 510 kit from strictlyejuice is not a particularly happy one. My batteries aren't mega, though.
Both batteries in my red SEJ kit stick. This is not something you want to fool around with if you're prone to laying it down and walking away. The LED does not stay on, and it doesn't always sizzle when it sticks.
Also, it's nearly impossible to keep the cart topped off. These things suck down juice like there's no tomorrow. After a few puffs, there is a burnt taste, but it's not like a burnt atomizer/primer taste.
strictlyejuice has finally announced their cigs are not the real thing. I don't have a problem with knockoffs, but I do have a problem with knockoffs that don't work as they are intended to work. I've asked for a refund. I'm not interested in replacement parts. Two bad units in one kit does not inspire confidence.
I have been extremely happy with both my regulars and megas from Totally Wicked. When they had their 30% sale, I loaded up. I got the red kit from strictlyejuice only because I'm addicted to anything red. When Totally Wicked comes out with red, my life will be complete.
It's not my intent to bash a company. I do think, though, that a warning about sticking battery buttons should be paid heed.
I'll let you all know how they handle my request for a refund.
