Normally, the only people I see who recommend it either sell it or weren't aware there were other anti-virus programs. In my experience, it wants to run your PC's security it's own way, come rain, hail or shine.
As far as spyware protection goes, could I suggest [link|http://www.pctools.com/spyware-doctor/|Spyware Doctor]? ObDisclaimer: I work for this mob. It's not freeware like Spybot and AdAware, I'm afraid, but it's been getting good reviews for a while, now.
Wade.