I already have a few of these compression packing cubes for my carry-on suit case from another company. They were beginning to tear at the seams and so I figured i'd buy another set to expand upon for my main suitcase because they've worked out so well before. This set of Gonex packing cubes really comes with a multitude of sizes that fit all of my needs, and then some. I like that they also include a shoe bag as well.
They are made rather well, and the extra option for expansion and compression really comes in handy when you need it. The carry handle makes it easier to throw around and handle in general.
I only wish there was a package that could mix and match a few sizes so things would fit neater. Like two large and two medium sized bags, etc. But overall, i'm really happy with this set and recommend it to others.