I was trying to reorganize my laundry room / sewing area - hoping to eliminate a hamper.  I originally had a 3-bag hamper and another separate hamper.  This allowed me to use the same space as my old 3-bag hamper (only slightly wider space needed) and eliminate the other one.  The bags are somewhat small (as compared to my old one), but it just means I can't wait too long to do laundry!  It was easy to assemble (although I found the instructions once I'd put it together - make sure to check the folded bags for the sheet of instructions) and rolls easily.  Nice-looking.

Pros: Fit the space, rolls easily, sorts as I need