I compiled the following information from the middle school inventory on electives and honors classes and the historical demand for 2011-2012, which are available on the SFUSD website. SFUSD has a column in their inventory spreadsheet to note if a school employs tracking or not (see column 5, "Are Students Tracked?").
Here are the middle schools that offer Honors classes and track students, followed by the number of first choice requests:
AP Giannini: 554
Here are the middle schools that DO NOT offer Honors classes or track students, followed by the number of first choice requests:
Lick ("algebra is slightly tracked"): 198
Vis Valley (applies to 7th and 8th grade): 31
According to the data, PARENTS WANT HONORS CLASSES AND CHALLENGING EDUCATIONAL ENVIRONMENTS FOR THEIR CHILDREN.
Of course, if you don't want honors classes for your child, then the spreadsheets on the SFUSD website are helpful for finding a school that matches your educational preferences.