I can't praise this product enough. The quality is better and the price cheaper than the next competitive product. My lower kitchen cabinets had only one unadjustable shelf which made it difficult to get heavier items out for me. I keep the shorter items on the top rack and taller items on the bottom. They rolling glides are very strong. I would rate this a 4.5 if the option were there simply because for my needs I purchased a shelf liner which makes pushing the items on the shelves easier. 

Pros: Great purchase, great value, great quality.
Cons: Needs shelf liner for easier movement on the items on the shelf.