I don't know much about video cameras, but I do know this: a lot of video cameras overload badly when you plug the output from an audio taping rig into the camera input. I've given a patch from my audio rig into a videographer's input on a couple of occasions, and when I see them the next time they always tell me "it was all distorted, too hot a signal". So do your research before you buy, and avoid the situation where you spend a bunch of money and just get distortion. See if your camera has a spec like "maximum input level= -10dBu" or something like that. If you give us that number we can help you. If you live locally to some tapers, maybe someone will loan you a set of mics for an evening to see if it will work OK. Or maybe you need a cheap in-line attenuator to drop the signal a bit.
Yeah, I know many camera's have trouble handling high volumes. Just listen to the many amateur video's uploaded on youtube, they are often distorted!
My camera is the Panasonic SD700. I always control the audio manually; in that case VU-meters appear on the display of the camera. I always make sure the meters do not jump into the red (a brief peak is fine though). This video is an example of a distortion free recording:
http://www.youtube.com/watch?v=A1BIRljDXrwSome technical details of this recording: the switch on the Rode microphone was set to -10 db and the signal (of the microphone) was reduced -27 db by the videocamera. The sound pressure varied from 90 to 100 db. So I had to the reduce the strength of the signal 37 db!
As for my original question: I have listened to many Church Audio recordings over the last couple of days. Some of them sound very good, some of them not. Obviously many other factors play a decisive role, such as the quality of the speakers, position of the microphones, etc. The same thing applies to the recordings I made with the Rode Videomic: some of them are very good, some of them less good. Therefore I am not convinced that Church Audio beats Rode.
However, there is one reason why I'm interested in getting Church Audio stuff and that is stealth recording. For example, for recording performances of classical music. Unfortunately, I haven't found many examples of that. So I anyone knows a good example of that, please let me know!