i really dont want to sound like one of those people who advertise the destroyer, it has been advertised enough (its on the top of the page for crying out loud lol) but i would whole heatedly tell you to get the new destroyer.
Its true, for the most part the same questions are the same, thats because the DAT itself is a recyclable exam, but at the same time evolving, so new questions are being added at a constant pace.
The newly added questions are great, specially for the fact that they may even appear on your exam. Even if one question appears, thats the difference between a 30-27, on some versions of the test. And it definitely has new features, like that chemical lab test page, which is key to some organic questions 😉
point is...if you have the money...get it!