So many companies have jumped on the bandwagon to produce absolute tanks that are NOT useful in casual everyday carry. In general, thick blades don't slice as well as thinner blades, but one can grind a secondary edge profile which will provide better slicing ability with the thicker blade.
ZT's are excellent knives, and the company has models available for your specific purpose. Models like the 560 series are much too large and too heavy for me, although I truly enjoy the various 0350 variants. One of my grown sons chose a tiger-striped 0350 (0.125" blade-width) immediately for his own use, while rejecting the NIB 0551 (0.160") next to it, without a second thought, as too big, too huge, too thick for his use and carry comfort.
So personalize your knife to your intended use. The 0350's are relatively thin in blade-width, handle-width, light and very capable. My favorite 0350 is one with a composite blade-steel using ZDP-189 which takes a fine edge and holds it a long time before needing resharpening. In general, thinner blades slice better; thicker blades are much tougher and can even be used to pry without chipping or breaking of the blade tip.
My blades are usually about 0.125" (1/8") stock thickness and I'm happy with up to 0.165". The blade-widths of 0.190" and above, IMO, are special use knives, finding use with LEO's and the military. Most usual type folks, like myself, have no use for blade-widths that are 1/4" or more in thickness, although opinions vary , and many of these "tanks" provide enormous self-satisfaction to their owners.
I have several other favorites, all of which use blades of approx 3.5" long, blade-width that's not too thick to slice.
My number one had long been the Spyderco Paramilitary 2 (PM2), although the CRK Sebenza and the Strider Sng seem to prove its equal in nearly every way. All three have a blade of suitable length and width, a pleasantly thin handle width and weight which falls nicely below five ounces.
Although the Spyderco PM2 blade-steel is availble in many different supersteels, and I REALLY like that, the Strider and the Sebenza (CRK) have opted to provide specific heat-treatment parameters which provide adequate strength and edge-holding capability in their blade-steels.
Sonnydaze