About a year ago I needed to replace the family size organizer that I had had for quite a few years. I am not as impressed with the new design as I was with the former design. I find that, while durable, it is constructed to be flimsy. If the bag is not absolutely full with supplies to give it support, the sides and back will flop anywhere; which, for me, makes packing or getting things in the bag rather frustrating. I do not always hang the bag, I do not always have a place to hang it, so if I have it on the counter for use, the bag has no hold.
I have yet to use it. But I like the size of the medium. The outside pockets look like they could come in handy for more organization. The removable inner piece will probably work well for a simple shower IE; soap and shampoo.
I have owned the medium size for 12+ years. The design has changed a little, but mine has held up all this time. I'm thinking of getting a second one for use at the gym. The first one is still in great shape!