Good question. I recall looking into BufferZone Pro some time ago during a promo.

Ah.. found the link I had bookmarked to a thread at WildersSecurity forums:

The 2nd post says it's a good product, read through and see. (there's about 70 posts in the thread.) ==> that's the good and bad news about Wilders forums. Lots of extremely knowledgeable people hang out there so there's often a FLOOD of information to read through.

But if you want really in-depth info, that's the place to go. Also, I remember seeing a lot of posts about GesWall there. They would know the score on its development or lack thereof.

Yeah, sad news about Webroot acquiring Prevx: they still haven't even provided an upgrade path for Prevx 3 license holders.