I use it for 2 years I was playing earlier on Fishman sensor (150).
Report qualitprix honest, nothing more. It's been nearly 400 even when the sensor!
With experience, I do it again this choice.
Advantages: very good sound, finally finished the sound of "soft trumpet" of some electric violins and the sound of nazillard pizo conventional sensors gender Fishman.
If I understand correctly, this sensor is made up of a static micro encapsulated in a "plug" of cork. I place not in the bridge as advisable, but in the eye of you require it, I find its best here.
Edit 18/11/2009: I changed the position and handed the position indicates: in the fuzzy sound is nice, sure, but some notes stand out more than others, which is very sgnant
on the other hand since I have a Focusrite VoiceMasterPro behind, including the Switch-on d-Esser and rings ...
In addition, the output level is consquent and therefore much easier to work on an effects rack.
It must sand the cork to fit the violin, but nothing irrcuprable: if we plant (or if exchange violin), a layer of varnish on it and start again!
Disadvantages: not emptied of sand the cork (and cut off the bridge!) To perfectly fit the violin, but at least it's tailor-made!