Sounds like no one knew what they were doing on set. If they plan to deliver on SR, they should have rented an SR deck and recorded directly to that. Or at least a D5. Both of which are much better HD transports. But I guess we all run into this with HD lately….
HDCAM = 143 mbits
DVC-HD = 120 mbits -but it’s 8bit. No 10bits possible.
DVCPRO-HD has a better colorspace, but slightly heavier compression. However, pound for pound, I think the DVCPRO-HD captured directly to hard-drive will be the best bet. HDCAM is, IMHO, crap. For finishing you could send that DVCPRO-HD sequence out over SDI (via Kona, etc…) and capture it 10 bit 4:2:2 Uncompressed and it’ll hold up pretty damn well.