The Montessori version is simplistic, and pretty, and the weight of the spindles seems to be just right for little hands. It is also can cost around $45, which is not in my budget.
I do not claim that mine is as beautiful, or lovely, but it does serve the same purpose, and mine cost $7.
I found mini-tackle boxes/craft boxes at Walmart in clearance section for $3 each. They have 6 compartments which gives us an extra one to store our spindles in. I also picked up a package of neon straws for $.97 and cut them to fit into the compartments. I already had address labels at home, that I used to write the numbers on, and stuck them on the inside of the compartments.
I will say I do like that mine have lids, and are much smaller than the wooden spindle sets. This makes storage a little easier. Since our spindles are straws O has had to practice to find the correct amount of pressure to grasp the straws without bending them (obviously, good for fine motor). I also have the freedom of switching out the color of straws or replacing them with toothpicks or cut up dowel rods or crayons.