I like the Proslat system, having installed in three garages so far. While the QC on the wall panels is good, the QC on the accessories leaves a little to be desired. With regard to the Magnetic Tool Holders; I’m finding that some are crooked and poorly aligned. Otherwise they hold my tools quite well.
With regard to all of the wall hooks in general, the bottom clamp doesn’t grab the panel strongly enough such that they move slightly when you put something on them. This is especially annoying with the bike hooks, they move every time I try to hang one of my bikes. I’ve had to resort to putting a small piece of rubber in there to increase its grip.