I rarely carry a fixed blade to the field; my SAK (Hunter, I think?) is enough for me. I did try a few times with both a kabar and short KaBar, but didn't really use them. I also bought a SOG Seal Pup on a whim (kind of a waste of money) and never use it. Probably the KaBar shorty will be my fixed blade of choice, mainly because I have it now, it's relatively inexpensive, and it fits my hand pretty well.