I did a few problems from the general DAT destroyer. QVault gives an extremely accurate representation of what's on the test, at least for me anyways. The only difference seemed that there were more "quick and easy" questions per Qvault practice test. I suppose I just made too many mistakes setting up problems, which cut down on my time. If you practice enough and are able set up the word problems by reflex, the section shouldn't be too bad.