I would stay within the brands listed above, based on my experience. I've heard that the Hondaline lower front cowl is a much better fit than any of the others. Mine isn't Hondaline and went on with a little trouble. That piece may be the most critical with fit.
Every piece of ShowChrome/Big Bike chrome I have purchased has either faded, turned green, or rusted. Kuryakyn was good, but they are slipping also. The Hondaline stuff seems to be holding up great after a couple of years.