I own a Sony VX2100 and have a wedding coming up in a few weeks. And I was wondering if it would be better to upgrade the built in mic to an external zoom mic for use at the speeches? I don't want any ambient sounds at this stage, just the person speaking and I think hand helds and radio mics are impractical. Does anyone know if adding an external mic would reap any benifits over the excisting mic? I'll also be using a wide angle lense at this point so cant use an overly long mic with it. Any recommendations?