The SkyWriter has been developed to the point of offering it as a kit.  This airplane was designed as an easy stunter that flies well with a standard sport .049.  A big wing (200 sq. in.) coupled with light weight (approx. 8 oz. RTF) results in a nimble, very maneuverable and smooth flying model.  $35 including all hardware, S&H.  See it on my website, "Stunt" page:
http://snipurl.com/9igp