I purchased my Lectrosonics SMV's a while back but had immense issues trying to get them to work with my Sennheiser MKE2 Microphones and the M150's that I purchased with the lectro's simply did not come close to the quality of sound that the Sennheiser's gave me.
The local (I'm based in Johannesburg, South Africa) Sennheiser and Lectrosonics agents could not help me, nor give me the time of day as to how to wire the mics up correctly. The Sennheiser agnets couldn't even tell me that the microphone was a positive bias 2-wire electret! When I asked them if it was, their answer was "Um...I dont know"