I would say my fav is the step in harness that Cindy (chattiesmom) makes they are great fit. Cindy does a wonderful job on them. That is the only kind that I will use. She has a wide selection of colors to choose from, and they silk so they won't knot up there hair.
http://www.yorkietalk.com/forums/yor...elections.html
Once you use her harness you won't like any other ones.