Works as advertised, a small "treasure chest" of items to improve site speed and SEO. Noticeable improvements with basic configurations.
Ease of use
Sensible on/off options, ability to customize how you utilize the various elements.
Outstanding support. Problems with multilingual site and module issues in K2 were fixed quickly by developer via ticket system. Excellent!
Value for money
Excellent!! Has many options for improving site functionality, and the tech support is worth every penny!