I realize that the regulars here probably tire of the "Which controller should I get?" posts, but here is another one. I am a homeowner with a current 8 zone system, which I might like to expand further.... but a second controller in a different building might be best if I do that. I am replacing an old controller that I can't even remember the name of, but I have cussed at the last 3+ years and swore that "next spring I am replacing this damn thing". The controller will located indoors. I prese...