I'm using Norman Antivirus. My employer, a medium sized Australian company, uses it and recommends it for employees working at home. They also provide it free of charge.
Is Norman a good choice or should I invest in something else?Never used it, but here is a review. AVG is free to everyone and hasa worked well for me. I  sure wouldn't PAY  for Norman.

http://www.pcmag.com/article2/0,1759,1371091,00.aspReading the pcmag review added to the fact that you had to ask if you should USE it, I'd advise getting AVG Free also.It's been a while since I've looked at DDS's Norman AV is/was fairly respectable as AV utilities go but it's lack of control, it's pretty poor heuristics, poor unpacking capability and a few other niggles make it a poor contender as a commercial AV solution.

Do you have any alternatives in mind? Are you looking at purely home use or is there an organisation involved? Are there any special requirements or wishlists?

If you WANT a commercial AV solution, then you won't go wrong with Kaspersky Labs. If used in conjunction with the "redundant database" option, it just about negates the need for other anti malware/anti trojan SOFTWARE. Kaspersky offer an hourly update service. The Personal Pro version costs UK£47 but for that, you get two licences. So, if you can find someone else who wants a copy, it's UK£23.50.
There will be a free upgrade to vers 6 which is just about to come out of beta. (Beta testers may still be needed). Free time limited trials are available.

Phew!..... Sounds like I'm plugging KAV. I suppose I am in a way, but it's so damned good!
To make up for that, here's a good selection of mostly free, very USEFUL and above all, clean software [highlight]here[/highlight]. Enjoy!