For general anti virus duties Avira Antivirus is excellent. It consistently has the best or very close to the best detection rates in the industry and an excellent reputation. There is a free 'nagware' version (apparently the startup nag can be disabled with relative ease) and several paid for versions. Generally it is much cheaper than the big names. I use the paid version because I think they deserve my money. It also does not suck away your computers performance like some of the competitors products, so I don't mind leaving it running constantly. For anti malware i have used use malwarebytes anti-malware. I haven't needed it since switching to avira anti virus, but have used it several times for cleaning up friends machines. I believe the free version only does on-demand scans rather than constant protection, but you shouldn't need an anti malware program on constantly, if you have a good AV program. Regardles, check out the security section in Gizmo's Freeware Reviews and form your own opinion on what is best for you and also to get an overview of various security technology options available outside of anti virus/malware programs (Incidentally, an excellent site for finding reviews on all all sorts of freeware). http://www.techsupportalert.com/ For the people who say you don't need to run AV constantly, I fully agree - if you are aware of what potential virus and malware entry points there are, then you can either lock them down (firewalls, sand boxed browsers etc) or apply a little common sense. Personally, I don't trust myself to resist the lure of Nigerian benefactors...

Well, I use a Logitech G7 at home, which is the wireless version of the G5. Its as good as the G5 except for the poor battery life (you get two batteries and can put one on to charge in the supplied cradle, but they only last a day and fail at the worst time...). So as you say the wire is not a problem, I would go with the G5 (or its replacement the G500, assuming it hasn't been nerfed - as I haven't tried it). If you are on a tight budget - I use a Logitech MX510 in work (I game at lunch break if not that busy...) which is bomb proof and has lasted me for many many years (probably 6+). It is not as sensitive as the G5, but I believe the current version - the MX518 has improved and switchable sensitivity.