I moved to carto tanks from cartos because it became a pain to keep topping of a carto to maintain that tasty wet vape. Like most devices, when using quality cartos and good technique, one can likely find their sweet spot of vapor, warmth and flavor. I stumbled into some high quality clearos and the flavor, for me, was extremely close to dripping, which is my first choice.
I think cartos and carto tanks suffered a setback in 2012 when it seemed both Boge and Smoktech sent out batches of inconsistent cartos for a few months. Ikenvape had very limited availability for some time as well. Crappy clearos, cartos and tanks are certain to give a bad vape.
Ultimately, I think there are excellent cartos, tanks, clearos and rebuildable devices. Unfortunately, many of us have not used the best quality devices to compare, so people generalize that cartos taste bad or clearos leak.
Some people hate refilling a carto tank, some hate blowing out a gurgly clearo. Either way, for about a buck a week to a buck a month, these are great devices.
I'm just tired of people pushing what they like over what someone else likes. I say different strokes for different folks.