I will answer before Cupps takes the whole page.  You are getting confused a bit.  There is zero novel in endo free.  The novel has endopyhte but it is not toxic like the K31.  Endo free is just that and it will not be as hardy as the endo and the novel.  One variety is Max Q and now a Max Q 1 or something.  Like Cupps said there was a MOARK but it got tied up in legal issues and I think there are other novels now.  Just google and find out.  Ben