I thought Destroyer was an okay prep. Definitely go through it. I went through it twice and the second time it was all timed, I went through, 40 questions at a time as fast as I could.
I really felt that it was closer to Topscore or Achiever, but a little bit harder. But not much harder.
The probability was very straightforward.
Many of the word problems were the classic word problems that you see again and again. Stuff such as ratios, Jon, Mike and Jim in a ratio of 2:3:7 or something like that.
A work problem. However, the work problem was not the simple, simple kind you see in Destroyer. There were two people and one joined the other and they worked at different rates. It was a bit tricky. Destroyer only preps you for the very easiest of the work problems.
Similar triangles.
A couple conversions, but they give all the conversion factors. You needed to be able to estimate well.
Overall, I think Destroyer is good to show you the types of problems, but they give you ones a bit on the easy side. Not in terms of numbers, but just in terms of complexity of setting up the word problems.
I hope that helps somewhat, I started rambling a bit.