I have the Kaoko and I am happy with it for what it does, on a long ride getting some wrist rest time is like free pie! That said, if I could have anything, I'd choose the CCS-100, as I would really prefer a real cruise. The big determining factor for me was cost. The Kaoko was fairly inexpensive and it took 5 minutes for me to put on the bike. A real cruise, as I understand it, is a half a day installation process and that's if you know what you are doing.
Also, I do have a group buy going until on the Kaoko if you end up choosing that. Just follow the instructions in the group buy thread and get your order in before the end of next week.