Personally I found the corp edition to be better than the regular editiont they give out. I don't like either truely but if I had to chose the lesser of two evils, that's what I would choose.

Also back when IE 6.0 was getting bombed (it still is in many respects) with ActiveX spyware I ran into a virus that disabled Norton (Normal Edition) because nortan used IE 6.0's API in their software. Then it downloaded the rest of the virus and installed itself.

Quite creative and ingenious if you ask me but that's how most viruses are. Ingenious.

Either way, I like Bit Defender and as AgentSmith said, kaspersky.