I bought the lower priced Azden shotgun mic and found that the cheapo mount that comes with it transfers and even boosts the camcorders motor noise (tried it on three different models) to the point of making the mic unusable. My wife created a home-made mount with sponge rubber and velcro that works fine (but looks odd). I'm thinking of shelling for their $29 mount in hopes it will isolate the mic from camera noises.
As far as the mic itself (and this is not the XLR one), it works just fine.