Edge Firewall Recommendations?

Hi All,

Sysadmin for a school district. We've used a Sophos UTM virtualized appliance for the past seven years to handle our firewall/filtering responsibilities. Long story short, I'm unhappy with the level of support we get from them, and I'm not thrilled with the layout of their replacement products for our aging system.

Any feedback you can offer on firewall providers from a support/overall experience standpoint would be appreciated. Thank you.