You’ll need to pay close attention to the strength of the seams, and the quality of the finishes – for example, on the Secretlab they’re magnetized, a first. But generally in this price range, you’ll get very good fabric or imitation and very clean seams with embroidered logos. When it comes to density, always use cold foam or high-density foam. At this budget, it’s the minimum necessary. This will ensure that your foam is of the highest quality, and will retain its comfort over time by always regaining its shape. A low-density foam will eventually collapse with time and use.