We bought this one, about 4-5 months ago, and it was easy to set up, and its comfy to sleep on. I'd would recommend getting one of these.
http://www.ikea.com/gb/en/catalog/products/S69843748
A little more expensive, but deffo worth it.
http://www.ikea.com/gb/en/catalog/products/S69843748
A little more expensive, but deffo worth it.