What I found is that your average 2-3k sofa uses a foam density between 1.6 - 1.8 that breaks down fairly quickly. When you get to the mid tier brands the density improves to 2.0 - 2.5, although some will still offer a 1.8 as an option. These mid tier foams will still break down (depending on use) but are not 10+ year foams. Fyi a higher density doesn't necessarily mean a firmer seat, for example a 2.0 can come in soft, medium, or firm. Next my research led me to the longest lasting cushion you can buy, the spring down cushion. It can also be referred to as spring foam, or spring fiber depending on the material used. It's essentially constructed like a mattress using coils (Marshall coils) to consistently keep the cushion shape. Unfortunately only the high end companies offer these cushions as options. Most of these manufacturers are located in North Carolina, Highland House, Wesley Hall, Sherrill, King Hickory, Taylor King, and Hickory White to name a few. Along with better cushions these companies offer better construction, such as stronger hardwoods (maple, mahogany, walnut, and oak etc...), eight way hand-tied suspension systems, and more quality fabric options. Another long lasting option would be latex cushions, but once again not cheap. More on reddit.com

Couches and chairs and only bifl if you don’t let anyone sit on them and cover them in clear plastic like grandma used to More on reddit.com

The reality is the quality has gone down hill as you mention. My best suggestion is find a company / store that sells them with a good warranty for the leather / moving components. They usually go for 5-7 years. Atleast you can guarantee the quality for those years. You want to look for real leather, but now a days there is such varying qualities of leather. Genuine doesnt necessarily mean the best. Also they will use PU on the sides and back to save money. My suggestion would be to get quality real leather on all the sections that are prone to stretch. Be aware that real leather, and moving components don't always work hand in hand. Leather will stick to itself. There have been some really good leather replica materials that can be more durable, and better with moving components. Sorry I don't have any brand specific recommendations as I am in CA. More on reddit.com

Not an expert but Ive owned crappy couches- i would say no. Only because its like: what do you want? The disposable couch you buy every 5 years that will peel if your apartment gets too hot, that dogs and cats can recreate on, kids, parties etc Or do you want the solid investment- dont want to see a moving company in this room for another 10 years and then i can give the thing to a relative that would be happy to take it? I feel like you cant be on the fence. Similar in the camping forum i see reqs for ultralight gear that will also be convenient and durable for car camping and its like, very seldom to find both, if not impossible. More on reddit.com