Extra-deep sofas tend to be pretty low to the ground to give 'em that extra-comfy, bed-like feel. However! If you're on the taller side and don't wanna struggle while getting on and off your couch, ...

If you’re a fan of firm mattresses and have a smaller space, this sofa may just be perfect for you, though Chung Fegan warns that the seat depth “feels ungenerous,” and the extra firm seat ...

If you have a bad back, a firm sofa is preferable. “But a shallower seat depth and proper lumbar support is just as important ...