I want a shot gun mic to improve my sound in my film i am using the inbuilt mic in the camera but I have no mic socket I allready bought a voice recording but I found out it doesnt have a good range so its really muffled and hissy and really bad quality, so I want a shotgun mic ... with some kind of good quality sound recorder I was looking at this:

Amazon.co.uk: Olympus WS-300M Digital Voice Recorder and Music Player: Electronics & Photo: Olympus

Do you know if this is any good? It will leave me with £143 to get the mic and cables