Kangers (or rather bottom feeders in general) just became popular (in my less than humble opinion, here), because they are less hassle than top feeders as a general rule. Some people love them, whereas I can't even taste a plastic tank cracking cinnamon in a PT2. Companies make what people like, not necessarily what is the better performer. Look back to the beta v. vhs war (if you can even remember what a vcr is), or music players (ipods, how many people even know about competing personal media players) and then on to cell phones (iphones, the iproducts are pretty ubiquitous)... It's not about what is better, all too often. It's usually about what is hip/cool that dominates the market.