I have only taken FAR so I can only speak for that particular section but yes, I would definitely buy a product that gave me practice with journal entries and the application of more involved formulas (Diluted EPS, Detachable Purchase Warrants, Pensions, etc.) Knowing the formulas and journal entries and being able to apply them are two different things, and I think this is what will be my nemesis come score release time next week.
I did the questions and SIMS in the Wiley book, but after the first couple of times you start to memorize the question. Plus with the MCQ's, there is usually only 1 or 2 that covers a more involved topic. For example, there are 2 MCQ's in the Wiley book on Detachable Purchase Warrants that Yaeger recommends doing - 1 of them is when you know the Market Value of both the bonds and the warrants and the other 1 is when you only know the Market Value of the warrants. Not that this is a difficult topic, but I learn best by working problems over and over and you can't really work 2 questions over and over again and still learn from it.
And of course with the Wiley test bank, you can't just easily pick questions on one topic like Diluted EPS and I don't like the SIMS in the testbank anyways.
FAR - 84 (Yaeger) 11/2011
AUD - 94 (Yaeger + NINJA notes) 2/2012
BEC - 5/29
REG - August