I have an original OrbitKey from the first Kickstarter campaign that has yet to fail me, and so easy to use. I backed the 2nd one where they offered a multi tool that fits with the OrbitKey system but haven't switched over yet. A lot of people like the KeyBar too.
Also, I think the Keybiner is a fair bit bigger than the orbitkey or KeyBar, because of the carabiner part. I prefer just adding a small niteize clip to my orbitkey if I need the ability to hang it on something. Guess it depends on whether you want something for your pocket or something a bit bigger that hangs on your belt loop, etc.
Thanks for the responses.
To give a little bit more insight. I actually carry my keys in my back pocket. A house, car and store set.
Just looking for something cool for me to carry my keys in. I'll check the things you mentioned when I'm home.