[Guardian]

I'm definitely gonna have to play around with them more. It's hard to get enough supplies to make them worthwhile. That's the problem.

The materials for them is considerable, considering the volume of Iron needed, and the gold for the powered rails. Overall though, I do think it worth it for well traveled routes. Don't go willy-nilly with them, and they're more manageable. I always create my paths and tunnels, then as I mine the materials I pick the most traveled route without rails, then start from there.