This really is a great mattress for the price.  We have had a spare sofa bed in our boys' bedroom for years for use when we have out of town guests, but I have always been embarrassed to use it because the spring mattress was so uncomfortable.  This foam mattress makes all the difference.  We slept on it for a night to test it out, and it may have been more comfortable than our own bed...  Now I'm not embarrassed to have company!