HD-Cam or Varicam ?

i all, Have a shot for an ad coming up and we were shooting HD_cam 900 I think..

Anyways the DOP and camera hire place are pushing Varicam.. that concerns me.. especially in the post part, as I'm totally new to Varicam.

From what I can gather

HDCAM 1080 vs Varicam 720

HDCAM 4:2:2 vs Varicam 4:2:2 ? correct?

HDCAM 10bit vs Varicam 8 bit ? correct?

Also.. hdcam is shot 25fps but varicam is shot 60fps.

So there is some post work to be done to get 25P out of it. Will the 25fps extraction be pure frames? or have some sort of pulldown?

Current workflow is

Edit house offlines on FCP

We get the FCP files (sometimes just an EDL) and recapture the final sequences at full HD

The other concern is the CGI

3D tracking is involved in this.. so are we better to ingest at 60P and track that rather than converted flagged pulldown 25? :-/ but then how do we extract the track to 25fps? If we track the flagged 25 are all the frames full frames or will a few be interlaced or mixed screwing the tracking?

So from what I gather shooting varicam we are gaining a more filmic look apparently.. but loosing rez+colour space+ time in post

Any thoughts?

Cheers