I like SAS but need advice. My Avgas (paid) is soon due for renewal. Should I renew or switch to SAS Pro - they currently have a special @$19.95. Only concern is that SAS, the free version, with icon enabled, uses more memory than avgas on my system. Currently my only protection is NOD32, Comodo firewall, Opera, behind router, avgas, and Frontgate for deleting unwanted mail from server. What should I do ?