The original PST is a very “petite” tool, noticeably slimmer than the Bond. The Bond fits nicely between the PST and Rebar size wise. I’m having a hard time choosing between the PST and Bond as my EDC multitool. The Bond has more robust, updated tools, but the original PST is fit so nicely together, it’s almost like a piece of jewelry. What makes the Bond more carryable than the PST is the pocket clip. You hardly notice the Bond at all when it’s clipped to a pocket. In the hand, I do notice a difference between the two. The PST is so narrow, whereas the Bond fits the hand a little better. Weight wise in the hand, I don’t notice a difference. There is less than an ounce difference between the two.