I'm gonna make the AX on Sunday
I will not be able to make either of these, but the PCA puts on fun events, especially the time trials, which have a road course-style layout where you spend all of your time in third and fourth gear, so there are much higher speeds than an AX.
More info at http://mav.pca.org/.
Fun day today at the TT. Ran the P1 course for the first time. That is one fast sweeper, hitting 110 at the end into the hairpin. New tires made me feel pretty quick.
Very very good AutoX course today coupled with perfect weather.