We purchased this sectional for our office.  It is very firm, which we like.  You do not sink in.  It is brand new so I am unable to review how long it will maintain its firmness.  It looks really nice in the area we placed it.  I ordered the brown and not the black but I have to tell you, if it's brown, it is so dark you need to put it next to something black to see the difference.  We held out for the brown and paid more money because of our wait so that part is a little disappointing.  It does not make a difference in the office though so we are very happy with it.  We also paid extra for delivery and putting it together.  The guys were super nice but had no idea what they were doing.  We had to help them figure it out.