In my opinion (and take this with a large grain of salt). I have never meet a pullout sofa that is comfy. We are long time vacation club members, actually since 1991, and one of the things that bothers me is the lack of real beds. i know some people don't mind them and that's great. I think you have to try it yourself. For my family we don't care for them.
I hope you can find something that works for your family and have a wonderful vacation!