Incanter is already a very high quality piece of software. If you do any numeric/statistical computing I highly recommend it. It was my primary motivation for learning Clojure, and it has not disappointed me.<p>In contrast, R is mature and polished, but leaves something to be desired as a language (at least to me). Clojure as a language (and by extension Incanter) has a degree of loving craftsmanship that makes it much more pleasant to work with. It's like a well-tailored suit; the details make all the difference.