Yup, everyone has a different idea of 'simple'. I consider a dripping atty one of the simplest devices out there to use, but of course you have to drip. Now, the dripping process is just about as simple a thing as anyone could ever do, right?
Wrong LOL, it is for me, but not for everyone. Then there's wire, wick and cleaning. Not everyone considers that simple either.
I agree with KODIAK, there's nothing I can think of that's simpler than plain cartos, but they don't do it for me as a good enough vape so they're out for me. My minimum requirement is a rebuildable that I can set up as I wish.
For me a Reo and a dripper is a simple enough setup and is also one of the best vapes I know of. Once a month I take the atty, battery and bottle out and wash the Reo in hot water. Takes me a bit less than 10 minutes and I'm vaping again. Replace the dual coils about monthly. Takes about 10 minutes. Depending on the juice I'm using I get 15-40 ML through the atty before I need to dry burn it and every second time I replace the wicks. Takes me about 5 minutes.
Works for me, but as I said everyone is different and in the end the most important thing is to stay off the stinkies
