What's your preferred SEO tool for keyword research?

My go-to for keyword research is SEMrush. It's a comprehensive tool that not only helps identify high-value keywords but also offers insights into competitors' strategies. The depth of data and the ability to track keyword performance over time are invaluable. I'm currently utilizing SEMrush for my client's site (https://posstoretracking.com), and it's been instrumental in honing our SEO strategy. Highly recommended!

Currently Ahrefs. Thinking to switch to Semrush. In the near future, adding keyword research to our own tool KWHero.