I am looking for a good clone RDA that has as good as or better flavor as the mutation X and can be used with single coils to achieve good flavor. I saw the tugboat today but could not see where one side could be closed so I was not sure how good it would work with single coils. I also saw the one with the dog on the side. Can't remember the name. He said they were not clones and were $30 dollars. I was not sure about their authenticity. The tugboat did USA on the bottom, but I don't know about their clones.