Panel thickness is 5/8" vs 3/4" on some more premium organizers.  When it comes to shelving, I always prefer the thicker products.  Assembly is easy, but support shelves must be screwed in from the side, so it is not possible to have a straight surface across the top with using l brackets.  These worked fine and were structurally stable once installed, but I prefer the style of product where the support shelves utilize a locking pin for ultimate flexibility.   I opted for these due to the reduced price, but the above lists the things that are sacrificed with that decision.