When talking about companies I always went to the best AntVirus software and when I was the head IT on the company (5 years ago) I bought Norton Anti Virus Corporate Edition (was version 9 back that time) cause it connects flawless to the Active Directory and Exchange Server and provides a central update and distributes the new virus definitions to all clients when you want.
in 4 years that was serving the company I had no problem of any kind of Virus in that company! only stupid malaware, spamware related, nothing that I couldn't remove on the client PC.
I don't know if it is a company you are talking about, but at least you have my insight ;)<

I've also had a lot of luck with AVG. I use the free version at home, and have set up a small business or two with the appropriate editions for their file servers.
Even if you don't go with them, I'll echo rui's sentiments - go with a trusted vendor. If you're not sure, or if it looks too good to be true, move on.<

http://www.f-secure.co.uk/home_user/buyonline/fspsb.html looks good value. I used to use f-prot back when Netscape was hitting version 0.97 and Mosaic was the dominant browser! They've been about a long time and have masses of experience, so the price is great.<

lol I remember 175 baud modems, ticker-tape, keypunch, reel-systems, progmatic flexwriters, etc.; too. I remember stuff from 30-40 years ago better than I remember what happened yesterday.<