I needed two nice looking bookcases for behind a couch and these worked great.  The metal ends are quite sturdy yet light looking.   The shelves match a real cherry credenza nearby and go well with the walnut flooring. It was easy to put together with 32 bolts but you need a block of scrap wood and a hammer to fully seat the rails on the end pieces.  Just as well because you do want a tight fit to be sturdy.  The top and bottom shelves are well supported but the middle shelf is going to be too light to hold heavy text books.  So I will make a brace from the bottom to the middle shelf to support the middle of the shelf.  Other that that it is a perfect fit.  

Pros: Great look without beign a massive piece of furniture.  Easy to put together.  Packed well as the boxes took a beating but the unit was in perfect shape.
Cons: Shelving a bit thin, espectially for the unsupported middle shelf.