I've tried pretty much every type of clearo, including the Stardusts, the Kangers and the Vivis and never found one I liked. Even though the initial setup is easy, there is generally no consistency in performance or taste, plus a number of other issues like leaking, burning, or not wicking properly. I've recently switched to carto tanks and I'm in heaven. Once you get the hang of it, they are much easier to deal with and the taste is just amazing. So far no experience with rebuildables, but one should be getting delivered next week, so we'll see how that compares.