When comparing SEO tools, businesses should consider features such as keyword research accuracy, site audit capabilities, backlink analysis, rank tracking, competitor insights, reporting options, and ease of use, since these directly affect SEO performance and strategy. Pricing factors like subscription cost, project limits, team access, and data availability are also important, while key performance metrics such as keyword rankings, organic traffic growth, backlink quality, domain authority, and technical SEO health help measure whether a tool provides good long-term value.