Pros
- Functional and easy to handle
- Robust and enterprise grade
- Great support
- All in one at the same price (don't have to pay each feature separately).
- All security and quality of service required for web traffic in a single box (proxy, firewall, traffic optimization, caching, reverse proxy, load balancing, ssl inspection, authentication, logging...).
- Attractive price
Cons
- Old fashioned Web UI
- No email alert
- Basic firewall