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Grumpy the first is a very strong magazine - check their website as things like Dark Tower started off there. I think that since fantasy and sci-fi can be so close together as genres (technically the Pern series is a sci-fi even though the majority of it reads and plays out like a fantasy) its easier to do both rather than try and be die-hard one or the other and risk getting caught out. (I mean heck what does steam punk class as - its fantasy era most of the time, but the technology is often very sci-fi style).