I'm sort of in the same boat on cost vs. usability. I ended up getting the McFeely's pocket wrench II about 8 months ago based on the previous recommendation here. It's a solid tool and fits well in the pocket, while easily costing a third of the prybaby. It's not well suited to pulling nails, but can be used for such with the teardrop wrench slot. I have found that I almost NEVER use this, despite EDC for 8 months. I have used it for a paint can or two, but never as a wrench or the hex socket screwdriver (for which you would need to carry bits). I think McFeely's would do well to add in an actual nail pry slot and beef up the socket "grip" they are using.

I can't imagine spending the money on the prybaby unless I used it daily - and I would think most carpenters or heavy destruction workers would use a Wonderbar or longer prybar for leverage. For smaller nails like finish ones, I often just end up pulling with my pliers so the surface doesn't get marred.

About the only reason I still carry the Pocket Wrench II is out of force of habit. I'm interested in the reasons why others carry it and what they use it for most of the time. I know for doors or windows in an emergency - but a 4" piece of steel with very little leverage or 'bite' might not be the best tool for that job (they prybaby may be better suited)...