I have an Ikea sofa I bought in 2008 (on clearance, it had been a floor model) that is still going strong - though now on its 3rd slip cover (different colors when moving/redecorating).
I also have a couch/loveseat set I bought in 2013 for $900 at a place called "Extreme Discount Furniture" that seem to be magic - anything spilled on them wipe right up, cat and dog fur don't stick to them.
I once had a west elm chair (picked out by an ex) that was way overpriced (close to $600), not comfortable, stained if you looked at it funny, and the fabric wore out in less than 2 years despite not getting used.
The other thing I can't understand is how uncomfortable most sofas, regardless of price, are. I mean really, is it that difficult to make a cushion people would actually want to sit on? Quality and price for furniture, and often clothes too, are very nearly uncorrelated except at the extreme high and low ends.