UTM? That's soooo 2002! Though at the low end, that is probably the best solution today. Next Generation firewalls work at Layer 7 and inspect the packet once (instead of once for each way you want to look at it: stateful inspection, authentication, antivirus, IPS, etc.). I know of several UTM manufacturers at your price point whereas a Next Generation firewall starts at about $5000.00.
This is the future of firewalls. It's expensive now because it's new. But soon, you'll be able to do this on your SOHO (or SMB) firewalls: http://www.paloaltonetworks.com/
Today is a good day for information-gathering. Read someone else's mail file.
