I've observed the price of furniture to run, lowest to highest, something like:
Bad Ikea, Flat-Pack Furniture from Anywhere Else, Beat-Up Antiques, Good Ikea, Unfashionable but Good Antiques, Oversized Overstuffed NFM[1] crap, Actually Good New Furniture, Fashionable Antiques
Not linear, there's a big jump for the last two categories.
While the quality/longevity runs more like:
Flat-Pack Furniture from Anywhere Else, Bad Ikea = Oversized Overstuffed NFM Crap, Good Ikea, Beat-Up Antiques, Unfasionable but Good Antiques = Fashionable Antiques = Actually Good New Furniture.
Basically my conclusion's been I need to either buy good stuff (unfashionable antiques, occasionally good new stuff—fashionable antiques are out of my price range) or just get Ikea. The whole rest of the low-end market's at least as bad, and usually more expensive. Some of it pretends it's part of some non-existent middle tier of quality and is priced to match, making it the worst possible furniture to buy (oversized overstuffed NFM crap—it's also usually in a tasteless faux-antique style).
I also think people who complain about Ikea's directions haven't assembled much shitty furniture from anywhere other than Ikea. It's all much worse.
[1] Nebraska Furniture Mart, here used as a category.