So lets see. I purchased in 6. The rack performed extremely well. Annoyed that they cant be charging and being used at the same time because the battery barely lasts though a work day. I like the somewhat oversized, breathable case they come with. Lots. Judge the game, not Amazon. Batteries were corroded. I wear house slip-ons every day and usually I get a good two years at least before the stink sets in. That?s besides the point though.