I am looking for a good knife for police work. Currently I have a spyderco police model but it has seen its better days. What I am looking for is not a knife for prying and using as a screw driver but I am looking for something that I can use as a back up to protect myself. I have seen many of the knives like the new TDI knife designed by Ka-bar but I didn't like it since it had to be attached to my belt. I would prefer something with a fixed blade over a folder. Any help or suggestions out there would be greatly appreciated.