Well, I own one of every tool in that picture (except the BX cutter), and they're all great! I don't really use the Romex stripper too much though, because I still like the good ole utility knife.
But my favorite tool is not a Klein, it's my Ideal Reflex stripper. I use them for everything: stripping, cutting and looping.
They're the only tool you need when you "plug and switch" (besides a screwdriver, of course).
arseegee, what kind of mini razor knife are you using? Where can you buy one?