Just to add to Todd’s comprehensive response, I’d go with ProRes over DVCPro (if you’re on a Mac), just because it, DVCPro, tends to default to its own flavor of non-square pixel aspect ratio, and can be a headache finding the correct one to implement for a round trip to your editing app.
ProRes retains your correct display dimensions, regardless of source codec or pixel aspect ratio.
It’s more user-friendly.