ProRes 4444 (pronounced 4×4) is the new high end Apple codec that ships with FCP 7.0.
When you update to AJA Kona 6.5, the playback and capture options now give you not only the 10-bit and 8-bit Kona compression settings for the different frame rates, they also directly support the ProRes 422, 422LT, etc.
So when I digitize, should I choose the pure Kona codec for a particular format, or the Kona ProRes 4444 if I want the highest quality?