I like the look of the Pottery Barn sofas, but our local Pottery Barn doesn't have all of them on display so I am curious which ones people have bought and what they are like. Specific questions:

1. Which model did you buy?
2. How stuffy are the back cushions? Are they pillowy and softer or firmer? I am looking for a firmer back cushion.
3. How deep is the seating? I can get the dimensions of seating online and some are definitely deeper, but how is the feel? Like, for an average person, do you need a pillow behind you to sit or is the depth more of a normal seating depth?

One last, specific question for anyone who has bought the "tight back" sofa (the back doesn't have separate cushions), how is that vs a regular sofa? Is it deeper than a regular sofa and does the back still have a nice feel (although probably firmer)?