Rtech,
If you are planning to do any of the following in your office, then go for Pro.
1) Create an office network and manage centrally.
2) Share resources (like print servers etc) on the network to multiple users
3) Provide user based security selectively to the resources (files/folders) on the network
4) If you have a multi-processor system.
5) Want to share desktops and do remote access on the network
6) If you want to hook up to a network where all other PCs are running Pro.
But for normal office work without any networking hassles, Home is just fine.
You might like to check this thread on the same topic:
http://reviews.cnet.com/5208-6142-0....sageID=1164981