I like the "feel" of steel.
I like the cost of "cast."
One place where the die-cast shine: when you need to remove that inside lip from a coupling, so you can slide it over the pipe.
Sometimes, the plumber cuts through conduit whith his concrete saw. Of course, you need to pull new wire- but how do you repair the pipe? Slide couplings over either end, insert a replacement section of pipe, slide coulpings into place, and tighten. Try removing the lip from a steel coupling, and you'll understand why zinc is preferred.
