If your opinion which is better and why? I have heard very good things about the galvanized feeders, my only worry is that in the winter time here in Michigan, the metal will be so cold. I'm a little afraid that over time the plastic ones will become harder to clean, and maybe even become chews up. Does this happen? I want a hanging feeder I believe since they seem to be the cleanest, but perhaps I should make a gravity feeder (like the PVC pipes one or something) What do you guys thing? which feeders have you lived, which have you hated?