I have 2 wotofo bravo rta's. I like them very much. They are kinda a pain to build and wick on but not that bad. Not impossible. The wicking is the tricky part, because if you don't put enough wick in the coils, it will leak out the airflow channels and down your hand like a melted ice cream. I even put a strip of cotton around the bottom of the juice well, under the tails of the wicking. This seems to help keep juice out of the airflow channels. But other than being a little tedious to get right, these rta's are super nice.