I'm a BNSF conductor, but I most often work as a yard foreman/helper (which means I spend almost all my time on ballast). Since they were buying, I got Red Wing King Toe boots and I'm pretty happy with them. I tried a couple different insoles, including Red Wing's insoles, but I am most happy with the Dr. Schol's black and blue insoles. They aren't waterproof, but that's no big deal. I put each foot in a gallon ziploc bag then put the boots on when I know I'm going to be working in water. Then I don't have a care in the world if my boots get wet because my feet stay dry. Also, I take full advantage of the fact that the Red Wing store will give me all the laces I need and apply mink oil once a month, which will help waterproof the boots. My only complaint is the soles don't hold up well to sidewall heaters - I nearly melted them all the way down one cold, wet night!