I'm currently carrying a PST-II, but I'm about to switch to a Charge TTi. I Don't carry a dedicated knife (OMG!!), and the combination of the pocket clip, one-handed opening, and S30V, for me, makes it better than anything else.
At work I carry a new Wave using the pocket clip. I tried EDC'ing my Charge XTi before but thought it was too heavy. This time I'm going to try to force myself to live with it... The TTi is apparently 0.1 oz. lighter, but that's probably not enough to notice.