TS,
I tend to carry in my waistband rather than in a pocket, and I've found the CRKT M16 Slim Profile Titanium to work well. The Carson flipper makes opening fast and easy, and the LAWKS goes far in making the liner lock more secure for heavier cutting. I prefer the spearpoint to the tanto model, but that's because I hate sharpening a tanto tip. The blade is a tad over 3.5", which is a decent size to me for everyday utility work. The two downsides are the steel (AUS 8), and the fact the edge is chisel ground, but I've learned to live with it, especially since they go for under $60 at the PX.
http://store6.yimg.com/I/razorlimit1_1776_297354956
I've also happily carried the older model Benchmade AFCK. The newer model Axis locks (vice the old liner lock like mine) are probably even more reliable. I switched to the CRKT not because the Benchmade let me down, but rather because the CRKT had a thinner profile, which rode more comfortably for me.