I am looking to buy one a sofa bed or futon but dont know which is supposed to be better. I will use it mainly as a sofa and just open it up as a bed a couple of times a year when my brother comes up with his family. I dont want to spend anymore than £200. I was looking at these sofa beds http://www.argos.co.uk/static/Product/partNumber/6404507.htm http://www.argos.co.uk/static/Product/partNumber/6408046.htm http://www.argos.co.uk/static/Product/partNumber/6355247.htm Which one would you advise I go for or what sort of thing to look for? I wont sleep in it just use it as a sofa but a few times a year I will sleep in it when my brother and his family come visit and stay the weekend.