The Rode is supposed to be good. I've not used that particular one but I've used many Rode mics in the studio over the years and they're good bang for buck. If you're in any way serious about your sound or would like to have more flexibility to be more creative than simply bettering the camera's own mic then I'd probably recommend looking at one of the Zoom recorders. The H4n would be my choice. Granted it's more expensive but what it offers over simply a mic is well worth it. Again...it's only worth it if you're wanting to be more creative with your audio than a simple point and shoot mic.