I ditched Nortons along time ago and picked up Kaspersky (KAV has issues with Comodo though). If you don't want to pay for a subscription I would go with AVG or Bitdefender's free version. Both SuperAntiSpyware and Spybot S&D are good apps, I have used them both for years along with AVG antispyware (Ewido) as on demand scanners.
Below is a link of antispyware/av apps that you want to
STAY AWAY from. Each one has notes on why it is considered bad.
http://www.spywarewarrior.com/rogue_...e.htm#products