We purchased this last season, 2013.  I assemble many products as we have four young children.  This is by far the most challenging and includes the least helpful, most pathetic excuse for assembly instructions that I've ever seen.  Also, durability comes into question.  We're entering year two and, once we managed to get it reassembled, we'll be lucky to get a second year out of this.  Very poor durability on the enclosure and the legs that support the unit are flimsy at best.  My overall rating is one star.  Again, if you purchase this - be ready for a complete frustration-filled day of assembly with little help from the folks.