#1. BladeOps, West Jordan, UT
Not quite inventory of my #2 below, but a more knowledgeable and customer-oriented shop you won't find anywhere: www.bladeops.com
#2. BladeHQ, Lehi, UT.
These folks have a HUGE selection of knives, plus knife-related items like lanyard beads, custom axes, brass knuckles...er brass...