I took and passed it yesterday.
The "new, sample" questions were (I think) pretty obvious - they handed me a completely new additional test supplement dated April 2014 and I believe the sample questions were from that source - mostly all were performance chart reading, and not very complicated charts at that. Many seemed to be very similar regarding determining Vref and how and when it changed. Not hard to figure out, just make sure to read the chart.
There were a few questions I got wrong that I completely disagree with, even after coming back home and looking them up, but I suppose that's the way it is. Apparently the testmaker's definition of "best" in "choose the best answer" is different than mine.
One question in particular there was no right answer - I knew the right answer, and checked when I got home, and it wasn't one of the options. Kinda frustrating, but I passed anyway.
The W&B questions are the worst (and hardest to memorize :wink2
On the contrary, I almost prefer that type of question - at least it's something I can work out - add the weights, add the moments, divide, subtract the LEMAC, divide by the MAC, badda bing, there's your CG.
The regulation questions, on the other hand, if you don't know, there's often no real way to figure it out, so you end up guessing. I don't like guessing. (And I had to completely guess once or twice.)
I got one flight planning question, and yes I went through and figured the whole thing out (got it right, too). I also got one mini-flight planning question (the type where "what Mach number do you need to maintain between A and B to get there in XX minutes").
The "E-6B" calculator in the testing software was very useful.