Our research includes 70 expert total reviews for 5 best hard drives under $550. The highest average score is 93%, while the lowest is 80% (a gap of 13%). There are about 14 reviews per product. Reviews come from sites like PCMag, Wired, and more. Click on a product to see more information (including which reviews were included). This list gets updated every few days as we routinely add the latest products.