Most clubs run a variation of the AAO. I have only run the SF with THSCC and Triad. Not that it is bad. Plus, variation is the spice of life.
Every run group has advantages and disadvantages. I think Charles' whining is a little over the top. Having had the pleasure of running both early and late this year, I would choose early. Waiting until 3 in the afternoon to run makes for a very long day. There are only so many cars to watch.
And this ride-along theory being tossed about I think is a bad idea. I think it is great to take along an inexperienced driver. As long as the instructor is talking and teaching. I challenge anyone to show me how adding 180-220 pounds of ballast to car is going to keep it competitive. So by doing this you reduce your competition runs by 1/2. By all means keep doing
That is what course walking is for. I will be teaching course walking tomorrow. You will see you don't need to be a passenger to learn to drive fast

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Jim Pastorius
2008 Silverado VortecMax
1992 Camaro
CMC#92
2002 BMW R1150R
2009 3rd Place CMC Mid-Atlantic Championship
2009 CMC Hyperfest Winner