Which flooring company has the best reviews?

We would not name one, and we would be sceptical of any company that named itself. What helps is reading reviews properly. Look at volume and dates rather than the average score. Read the negative reviews for what actually went wrong and how it was handled. Check whether reviewers describe the specific work you need, and look for mentions of subfloor preparation, timelines and problem-solving rather than only how it looks. Cross-check Google and the company's own site, and ask any contractor for recent local references.