I got the black and white step stool and it is absolutely adorable. The short one gives just the right amount of lift for me to reach the cabinet above the refrigerator. I am 5'8" tall so, for those who are shorter, you may want to consider the taller stool if you will be using it to reach refrigerator-level heights or higher.
If you step on the center of the stool (where the hinge is located) it is, of course, not as sturdy there as if you stepped on the edges, so it feels as though if you gained a pound or two after, say, a particularly delicious Thanksgiving meal, you stand the chance of caving the stool in if you put your new found heft on its center. ;) At 145 lb, I feel a little give in the center of the stool if I put all my weight there. That said, the stool is in fact sturdy overall. A time or two it has been crushed between the refrigerator door and the wall and it has collapsed into its flat position with ease and was unharmed. I kick it all over the kitchen floor when I need to use it or when I need it out of my way, and it takes a beating without complaint.
It's got a whimsical look (cute li'l polka dots) that I dig and it can easily be folded up (just push the sides together) and tucked out of the way when not in use.
Good li'l stool for most jobs, I'd say. ;)