You can drive yourself nuts thinking about codecs and frame rates but just like ccbcc, I like to deliver the best that is practical, which for me means ProRes (HQ) right now. These clips should have value for 10-20 years so why limit the quality?
In 10 years maybe RAW is the way to go, which is not practical today, but at least ProRes (HQ) is close enough.
But content always wins though, and the way it's filmed. A properly exposed and graded clip with high compression will look better than an under/overexposed clip with no compression.