Laughing is pretty good. Agree that it is heavy on the acronyms. I did purchase the series with the picture book and questions. I actually took the picture book and then found the same pictures in Zitelli and tagged them (not sure if that was all that helpful as the test pics were bad quality). The questions were hard, some helpful and some rediculous.
The pediatric board review was very good as was the question book. This is the book I would get if I had limited time to study. Very high yield. It doesn't waste your time. It contrasts the content with similar dz and points out the differences right away. With laughing I sometimes had to go back to review similar sounding syndromes. It repeats itself but this is what you need as that is what the boards test. Ashish (the author) has sample chapters on his website so you can look at it and see what I mean.
Lastly, I hated medstudy. Way too much info without emphasis on high yield. I felt like I was in a forest looking at all the individual leaves and not seeing the trees. I would skip these books. However their question bank is very good.