I'm not sure how I overlooked this thread earlier! Sorry about the delay, Teri.
Selection can depend on a lot of things, Teri. Your zone, the types of roses you want to pair the clems with, and the color(s) you desire will dictate which clems are the best choice as your companions. I have roses that range from miniatures to huge climbers, and the choice of clem would be vastly different for each situation. Can you give me an idea of the roses you want to use as companions and if you are striving for a particular color scheme?