What do you like best?
Simplicity. Interface is superb and the ability to quickly configure advanced routing, static routes, DNS, DHCP relays using object-based configurations just makes the unit so easy to use. I don't have time to work through Cisco router CLI, this Sophos UTM does the job of a router and more with the time to configured about 1/3 of the time required for other vendors. The logs are extremely clear to read through and identify issues if reported by end users. And let me not forget that the Up2Date firmware process is so easy, when you have to do firmware updates on other appliance types you immediately miss the convenience.
What do you dislike?
POP3 Scanning requires Accounts, although it does scan POP3 messages, it is unclear how to configure it properly from the beginning. A bit too much research required to get POP3 scanning running smoothly
Recommendations to others considering the product
If you want to be able to deploy and managed reliable and secure appliance, the Sophos UTM running UTM9.x is the right choice. The ability to centrally manage and monitor all appliances from a Sophos UTM manager with no addiitonal licensing is invaluable. The TotalProtect(FullGuard) license/subscription includes warranty for the hardware, and the High Availability is extremely effective and easy to support.
What business problems are you solving with the product? What benefits have you realized?
Improved Performance for End-Users across the board. Simplified Security policies by Network, User, User Group, Time-Based Policy, Granular Categorisation and recategorisation.