It gives pretty accurate and close to reality metrics when it comes to competitor research. Another thing I appreciate is that the free plan itself is very helpful and can actually be of use for competitor audit reports.

The keyword mapping and comparison of the competition. Also the bidding type and bid cost etc.

Ease of use is what makes SpyFu well worth the subscription. The Ad History and PPC features are particularly valuable; not only can you see what competitors have done, you can understand how they have iterated and improved their ads over time. The PDF generator and the data export features make it easy for digital marketers in large companies to pull data out for the purpose of sharing with their colleagues in sales, customer service, finance, and of course the executive.