Highest Quality for video conferencing

Hello, I come here to ask for help in finding what would be most suitable for the following case:

My boss decided she wants to do online video conferences in an auditorium, making the speaker and the back of the attendants visible over the web, to be projected on a wall at another auditorium.
She wants the best quality available.

I've seen that microsoft's NX-6000 claims 2mpx videos, but says nothing about frame rate at that resolution.

If I want to go for the best quality on a video conference where bandwidth is not as much of a problem, should I go for high-end webcams, or should I try some camcorder with webcam capabilities?

Can anyone give a word on what's the best on resolution, keeping 30fps, out there?

Thanks

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Juliano