I've been a FreeBSD fan since 1997. It is nice to see FreeBSD running on EC2. However, for die hard performance junkies, I have built something faster and more efficient. For people that love all the BSD variants out there, my startup - tegataiphoenix.com - offers FreeBSD, NetBSD, and OpenBSD virtual machines (in addition to all the other usual suspects). The performance we are getting is around 500%-600% faster than Xen based BSD virtual machines. Mention HN, and get a discount. :)