Sofa?

We also have been having a problem replacing our sofa. We're on the second one (this one 4 years) since 2001 and both have been uncomfortable to sit on and to sleep on. We call it the "cardboard bed". I always sit in the same spot to watch tv and the dog has the rest of the couch. The cushions always get too uncomfortable and squashed. I'm trying to find one approx 70" wide with storage underneath but haven't found one yet that will last more than a couple years. Will try the websites mentioned in these posts. What we have been doing to inflating a twin airbed when someone wants to stay with us - one person on the couch and one person on the airbed. I can't use a regular futon because most are 78" wide and that would cut into the space I need for my dining room chair. We also have been pushing around the idea of building our own sofa but that would involve high density foam and I know that would squash down after awhile. Again, I'll be checking out those below mentioned websites. Good luck to you also!