Sofa Question

We're using our pillow back sofa now and I don't like it.  The pillows take up too much seat cushion room.  The pillows are never straight enough after using.  Too many damn pillows to get comfy and half end up on the floor after only 10 minutes.  UGH!

What kind of sofa do you have as your MAIN use sofa?  

What do you like about it?

What do you dislike about it?