For anybody on the fence, the Keybar is far more robust and sturdy than the Keysmart. I put my truck keys on the Keysmart and it felt like it would fly apart everytime I turned the ignition. I had to tighten it at least once a week, etc. While the Keybar is a bit bulkier in the pocket, the trade off is something that feels indestructible and has yet to loosen up. The built in pocket clip certainly sweetens the deal.