SDI is superior to component so go with the JH3. If you use the camera instead of a deck you will have to capture the footage as uncontrolled device so sourcing back to your original timecode will be lost so capture off a deck is preferable.
Do some homework and search this forum for advice on capture cards. With AJA Kona, Matrox and Decklink to choose from, you should compare features and make a decision based on primary usage and future needs. Basic requirements for your capture are SDI in and 9 pin machine control.