Q-bank - was fairly helpful - questions are much easier than the real thing, but it's good for reinforcing concepts.
schweser book 6 practice exams - very useful - more like the real thing than book 7 (the practice exam book).
schweser book 7 (practice exam book) - somewhat useful, would recommend if you have the time. Questions here are wordier and more quantitative than the real thing (and more difficult in general).
BSAS Mock exams - very good - some errors, but the style of question was closer the the real thing than the schweser exams.
CFAI mock exams - It is somewhere between absurd and ridiculous that the CFAI charges you $50 for 1/4 of a practice exam. I refused to buy one.