McAfee vs. Norton

I’ve been trying to find a location that has a good breakdown between McAfee and Norton. Can anyone point me towards an article that can give me the pros and cons. We are a small shop of about 100 workstations and 6 servers and I am trying to decide on which way to go for our email and workstation virus protection. I’ve noticed that Norton now has with 2000 clients a yearly subscription, does McAfee do the same? Also, we run Lotus notes, is there a prefered product in that realm? Any inputwould be greatly appreciated.
Thanks.
Chris
Dallas, TX