Just wanted to see if any other users out there are as impressed with the D-4 or any Delica for that matter as I am. I punish this knife on a daily basis. I carry a combo edge. In my line of work Im always cutting cardboard,strapping,hose,and all kinds thick heavy rope. I have a new E-4 at home and know that it would do better on some of my large jobs,but to my suprise my D-4 saws through them all with no problem. I do sharpen mine a good bit,so Im thinking about a ZDP-189, I've heard they hold an edge longer? Anyway is anyone else putting there D-4 through hard use?