The problem with some of these cig a likes is only their cartridges will work on the battery (don't know if this is the case with this brand) which makes you dedicated to one brand for the entire lifespan of the mod.
Have you considered maybe moving on to a different but similar device? Such as a cig a like with a refillable clearomizer tank? That way you can purchase or make your own e juice and not have to depend on one manufacturer to supply you with your fix.
I am like you, I am very picky on my e juice flavors. After spending 20 dollars a bottle on ANML, KILO, etc etc and reading nothing but amazing reviews, to end up not liking it was disheartening. I ended up getting into DIY (started by making other peoples recipes) and never looked back. Every now and than I will buy e juice still to get ideas for my own recipes and find myself shocked at the price to quality ratio these "premium brands" produce.
If you are interested in getting into DIY I can send you some links to where to purchase supplies, as well as some of my favorite recipes in my collection, and tips on how to get started.
Its funny because GreenSmoke was my very first vape of all time. I officially quite smoking over a year ago after giving vaping another chance but GreenSmoke was my very first experience. My experience was in my late teens......The cartridges would hardly last at all, batteries died supper fast, taste for all the cartridges I found were terrible except for menthol(honestly though who can mess up menthol?), the vapor production was a joke (taking huge long drags to match the production I would get from a normal cigarette drag), and I found myself still wanting a cigarette as bad after my vape break as much as I did before I would get my fix. The breaking point for me which got me back into the stinkies was the fact that with how much their cartridges cost compared to how long they lasted, i was spending more vaping than I was smoking and it made me feel like vaping was a joke as my cravings never diminished and the mod its-self sucked IMO. I find the fact they are still open to be amazing as I am 26 now. I am not sure if their quality has improved since then but its nice to see they no longer charge around 100 dollars for two batteries and five cartridges.