Are there any issues importing from the 5d3 into Final Cut pro 6? I've only used tape in the past.

Take your card and place it in a card reader- you will need one if you do this all the time. otherwise plug the camera into the computer.
Get to the file containing all your clips and simply copy and paste to you computer file.
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Sounds easy enough. I've read some about FCP6 not recognizing the MK 3. The card reader is a good alternative, or perhaps the method of choice. Thanks Dan!