There is another start up here http://thevirtualbike.com/
Video exchange forum http://www.route4u.dk/index.php/rlv
The best machines are freem motion rollers I believe from e-motion, but there are DIY videos [Especially this https://www.youtube.com/watch?v=bdkUSQeJQjY] to make them too. Another option is Tacx Galaxia which are a lot cheaper. They are also about the same price as the Cyclceops used to make DIY e-motion free motion rollers so if the rocker were insufficient one might put them on wheels.