I own a Canon S70, S80, and the Fuji F30. Both Canon's are very noisy at ISO 200 or above, while the F30 is very usable at ISO 400, and more then decent at ISO 800. It also responds faster then either Canon and the battery lasts more then twice as long. While I miss the wide angle lens on the Canons', the Fuji is the one I carry because of it's low light capabilities.
Carl