i dont really have a pocketknife persay ... unless you consider a almost 5 inch blade pocket size
i carry a 4.5 inch buck folder and then i have my skinner, my 7" and my 10" i carry when in field ... yea 4 blades may be a bit overkill at once but they all have individual uses

h:
i really wanna get the CRKT M21 special force folder though, just under 4" and semi serrated with a deep belly blade ftw ... 130 bucks roughly