I prefer the 6 Key Holder, as the back is big enough for cards without having the sides stick out. I use mine everyday and keep my DL and a CC in the back. I also have the Cles which I am currently using to house my coins. I had the Cles prior to the Key Holder and always felt that the chain on the Cles was too long. There have been times when I'm fishing around for it in my bag and was afraid that the chain would yank off. Plus, I feel that because the chain is s little too long, it doesn't fit well in my hands. The 6 Key Holder fits great in my hands, very comfortable an easy. GL deciding!