I'm curious about the KAC panels. I've noticed that they're popular, but can't help but wonder why when I see the price tag on them. Is it because of their texture/consistency? Or just the fact that they lock? Ergo makes locking panels that are significantly cheaper. I don't actually own either, I'd just like to know ~ Just in case I'm missing out . What IS the texture on the KAC's anyways? Is it rubberized?