http://www.skylit.com/calculus/index.html - good multiple-choice but a little harder than the actual test. Part 2's are good too, especially for giving tests since the students won't be able to stumble upon them when reviewing.
http://www.greenhallpublishing.com/apcalc.shtml - Excellent book although there are some typos. What I like about it is that it has 7 or 8 multiple choice and 1 or 2 part 2's on each topic that are broken up by topic and are conceptually based. The practice tests are probably too hard but the topical questions are right on the money.
All four of these books are less mainstream than the Barron's or PR but I think are invaluable resources to an AP Calc teacher.