Deckhead, the cost of switching is really not that much all things considered. Especially if you can resell some of your current tool boxes. I too have stacks of Ridgid boxes, and there are parts of the Packout system that is starting to look desirable, especially if they continue to come out with innovative items.
My Systainer's are going to be sticking around though, just for the fact my Festool stuff is safe in them. First I am going to try a stack of the Packout's, then IF I like them, find the Packout's on sale and start swapping out and reselling the Ridgid's. Black Friday might be when a decision needs to be made by.