We are doing a Hipps project but we are looking for state of the art beyond just normal firewall testing.
We are leaning towards Cisco as the front leader but not set in stone and some others but you could not buy it for a single PC it is an enterprise solution for what we are looking for and not just on laptops now we are also looking for all desktops as well. Hehe and spending will probably be in the 100k area per year with maintenance agreements.
A lot of are security guys at work use zone alarm at home and tweak it out a lot of people also like black ice the problem is on home PC's the options are not as good as a corporate enterprise solution
So far what I have seen of sygate on a home pc and at work there are better option.
I also know AVG the anti virus software I use just came out with an option but I have not tested or used the product or researched to find a review on it yet.
Here you go i found this with some in depth reviews on firewalls
http://www.firewallguide.com/software.htm#More