I prefer to look at the sites ranking in the top 10 - 15 instead. And answer the following questions:
Are they optimised for the KW?
Are they massive authority sites?
How many backlinks to the overall site & page ranking & from how many referring domains?
How have the links been built and how powerful are they?
Please tell me your strategy factor.don't go with any tool.
Tools can't tell you exact. Just do manual review about competitors, check their On Page SEO, Content, Backlinks.