Latest opinions on socket clip/ bars?

I got a cheap Alltrade tool kit for Christmas many years ago. In that kit were these socket strips. Ive looked everywhere for them and can find them any longer. They are flexible and hold the sockets firmly. So far I have not found a socket brand that has not fit in them. They are not to stiff like some of the screwdriver bit holders I've seen. I have them in 3/8 & 1/4 standard and metric. The metric ones are yellow. Unfortunately like I said, I cant find them anywhere, so its not a lot of help. However if you do run across them its an idea.

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That video of the socket strips above is pretty cool, and a very nice way to store them in a box. However, its not something I would throw in a bag and head to the junkyard with. I just dont think the sockets would stay on those rails very well if you banged it around. I havent had good luck with those metal rails.