If I'm reading my status screen right, my modem, which is an Arris TM722G, appears to favor my first downstream channel (DCID #3).
For reference, my modem has an up-time of 20 d: 14 h: 00 m at the time the picture was taken.
Also noted that I do not have any "Correcteds" or "Uncorrectables" listed. From looking at other screen pictures, most people have numbers listed in both of these columns for at least one of their downstream channels. Am I to take it that having none at all is a very good thing?