Butane taste isn't an issue for me, the only vaporizer I have that butane really bothers me is the Lithe.
I like that I can use a soft flame lighter and not just a torch. I have a variety of VaporGenies, the coil, a black, a walnut handcarved, the Bronze, and I have an adapter for connecting to a water pipe. I would buy a lotus if my Genie collection wasn't so thick or if I didn't have a hammer, or if I severely tasted butane so much I would want butane out of the air path. But I don't see the point of having so many similar vapes. Most of mine barely get used because the hammer can vape like the others.
The Hammers torch could become an inconvenience but it's been working well for me, but as a backup it would be horrible if it had a small problem when you need it.