Just updating this thread:
The Mackie's have been going out on rentals over the past few weeks. These are for school events, DJ's, church events, or whatever they need the speakers for. I've rented the tops out 6 times now, and they're still going strong. Nothing but positive comments from people renting them. They are going out with a small mixer, cables, stands and a few mics. No external processing or anything. No blown components, and no failures at all. I have no idea what kind of use they're seeing on the rentals, but needless to say, I've had 0 issues so far.
Evan