I use a TLM 49 in a sound booth, but am getting into video work and need a recommendation for the best Neumann microphone for capturing audio during an indoor video shoot (of a single speaker in a relatively fixed position) with the microphone out of view of the camera. I have been considering the KMR 81i, the KM 185 and the KMS 105. Which would be best at a distance of about 2 feet from the speaker's mouth? Or is there something even better?