I like a small folder, 3" max blade; then a medium belt knife (4 to 5 inches); then a chopper and a hatchet.

Currently, I'm carrying a Kershaw CQC-6 for my folder, a cheap Mora for my belt knife and I have a Kershaw Outcast behind the truck seat. No hatchet to speak of right now.

Ideally, I'd be carrying my Spyderco PPT for a folder, my 411 on my belt and a 11-11 for the chopper. Plus some sort of traditional hatchet stowed behind the truck seat.