My house has became a closet systems showroom. I have installed 4 different brands of closet systems for my closets. Part of it is out of curiosity, try to figure out the different between those closet systems. Part of it is out of necessity, different closet space has different requirements and one size does not fit all. Here is my review summary for all the closet systems. I also include the PAX wardrobes IKEA in the comparison for reference.
IKEA PAX wardrobes
Review: This is the first closet system that comes into my mind when I start looking for closets. Too bad its depth does not fit my closet spaces.
Martha Stewart Living Closet System
Review: I use this closet system for my master bedroom walk in closet. It is easy to install but still require a stub finder and a power drill. It looks nice with the laminate wood finish, but it only comes in one color
Canadian-Tire Extend-it closet kit
Review: If you already have the horizontal hanging rod, no tool is required to install the Extend-it closet system. The height and width of rods are adjustable and they fit together with clip-on. However, this closet system is very ugly and looks pretty flimsy. I regret I had it for my wardrobe in the hallway downstairs. I am considering replacing it with a different closet later.
Rubbermaid Configurations Closet System
Review: Installation requires stud finder, power drill and some 10# screws. The rail is vertical with slots for adjustable bracket. Rubbermaid has shelving pieces for the closet system but it is a bit pricey. I used generic brand laminated shelving from home depot and cut it to the right width instead.
DIY from Home Depot parts
Review: I build this closet from Home Depot DIY parts. I have to cut the shelving and dowel to the right width and fasten the bracket on to the stub. Install the DIY closet system is quite some work but it has the lowest price tag.