This may seem too much here, but since you are a veteran vaper, evoxbeck, I think it's appropriate.
More and more people are starting to discover the "Genesis-style" atomizers. This will take a little bit of learning and some expenses - it's like starting over. You might want to look into that - Scott / igetcha69 has several great reviews / tutorials on these devices on YouTube. The thing is while some clearomizers have a better flavor than cartomizers, they are still cheap, disposable devices. They are still somewhat fiddly, and although the new Vivi Nova is somewhat rebuildable it does come with its set of issues...
I cannot tell you the Geneses are the way to go - I'm just throwing a suggestion out there. My take on it is that they are cheaper in the long run, safe from any sort of sales ban / shortages and many vapers agree that they provide unmatched flavor and vapor in a class of their own.
The only downside is the low availability. These are usually made in small batches and sold through forum co-ops, pre-order lists or "sale nights"; then units do pop up on the classified sections at an enormous mark-up (capitalism at its best, I'm afraid)... You will need another device to run such an atomizer (any APV, really, including the LavaTube), and there are also "hybrids" - APVs that have a Genesis atomizer built in. For most part, you can forget about variable voltage or other calculations as you would build your coil every time to your specs and adjust it to vape well for you.
Look into it if you are looking for a way to "evolve" from cartomizers of all sorts. Its not as simple as just ordering something off a site for you current e-cig, but it may be worth it. Ask away if you have any questions...