Yeah, it is helpful. My major points that a RBA has to provide is no leaking, good air flow, easy access. The Kraken doesn't have a screw to close the fill hole so I don't know about leaking (have a thread about that too). Another one I am considering is The Rocket (Kayfun clone), as I like my genuine Kayfun Lite Plus. It is made of chrome-plated copper though, not sure about the toxicity of it, maybe you know that, too? The Taifun GT looks like a great device!