<p>I had fantastic results with the higher quality Sony external mics and the higher end HD cameras. The stereo separation and sound was so good that when I watched a tape for the first time and when I heard someone cough, I thought my wife had walked into the room to my far left, but it was actually the tape, much to my surprise. </p>
<p>Also, for that particular performance, I had the option of using the professionally recorded digital sound that the school had made, but quite honestly, the two sound tracks were so close, I didn't want to go through the hassle of substituting one for the other. Additionally, I liked the resonance in my sound better which was done from the balcony instead of on the stage. Sound reproduction is truly personal taste.</p>
<p>The key is microphone placement and with any of the reasonable video editing programs, you have decent mixing capabilities too which allows you to refocus the sound if necessary. Mixing mind you, not cutting, pasting or other editing, but these are also not too tough with high quality digital source material and a better than average editing program, unfortunately...</p>
<p>Like violadad said, you're looking at around $800 or better, but I think it's worth it since $800 isn't much if you're going to do this a few times since you'll burn that up in taping fees within 3 or less sessions. If you're lucky like me, you'll have A/V fanatics for friends and you can borrow theirs, but I've never borrowed a setup which couldn't be purchased for $800 - 900, including the external microphone. That sum does not include the tripod, which is also mandatory, nor the video editing program.</p>
<p>Back to the OPs questions, NO, your VHS-C is NOT appropriate for this. You want digital source media, so your copies are all true. This does make a great excuse for presenting a cogent case to the "Minister of Sociality and Finance" why you need some new toys, and we all know that "Boys need toys!!!"</p>
<p>If you don't want the hassle then contract it out. If you like "playing" then go for it, IMHO...</p>