I have used and am licensed for both Outpost 2.1 Pro and LooknStop. As far as inbound protection is concerned, both seem to completely stealth my system as online tests (GRC, Symantec, Security Space, etc.) are concerned. LooknStop seems to be a bit easier on resources, quite a bit less glitchy with other apps and has no annual renewal fee. However, in terms of application control, OP 2.1 is a heck of a lot easier to limit outgoing apps to particular protocols and IP addresses. Moreover, I also like (a) the logging on OP 2.1 and (b) the Active content filter plug-in on the program (I don't need the ad control plug-in because I use Ad/Subract Pro). So, my question boils down to this: how important is it in terms of security to (a) be able to specify particular IPs, ports etc. for apps rather than just block/allow (yes, I know you can specify some of these for LnS but it's definitely not that easy to do), and (b) be able to block Active X, VB scripts etc. from Web Pages (yes, OP 2.1 can also block them from e-mail, but again I don't need it because my e-mail client allows me to do that)? Thanks in advance for your replies.