Last year I worked with one of the major networks as they transitioned from analog to digital. The engineering departments in both NY and LA unanimously agreed that ProRes (not HQ or 4444) is the perfect intersection of quality and file size. The shows they are archiving are are all shot on 35mm, vipercam and the like. If ProRes is good enough for one of the major networks, I can tell you it’s more that good enough for DSLR footage.
Steve Martin