I definitely prefer the adjustability of the Buddy Belt. I think they are both great harnesses. I don't have Choke Free harnesses, but I have seen them. I like the leather on the Buddy Belts more, and I'm not crazy about Velcro with long hair. I also find the buckle easy to use. Still, I think you can't go wrong, no matter which one you choose or with either of the YorkieTalk members who sell them. They are both wonderful to work with.
Buddy Belt Harness http://www.yorkietalk.com/forums/member.php?u=19209858