Avast = Free
Mcafee ENTERPRISE = £££££££'s
You get what you pay for.
But on another note: I dont have the time to go through your list, but of the top of my head,
QLowZones-4 trojan - is a Trojan that was discovered in Jan 2004, Proxy.Raser trojan
late 2005 - I just can't beleive you when you say avast did not detect them.