DanielleR -
Great News! Veritas Prep has just made a package of 5 practice tests available for purchase in addition to the one test that is free. The free Veritas test has only been around since the spring and the additional tests were made available to Veritas students only in July. These tests have no relation to the tests that Veritas used before that time. If you read reviews of any Veritas test from before this those are the old tests and you can ignore those reviews.
The new tests are considered by many students to be the best tests available outside of the official GMAT Prep. The algorithm is based on tens of thousands of actual student responses and the the adaptive ability of the tests is extremely impressive. The interface is also very helpful, giving such information as "The three least difficult problems that you missed" and the "average time that you took on each question type" (as well as each individual question, of course) and lots of other helpful info!
Anyway, do not take my word for it. Try the free practice test at this link:
https://www.veritasprep.com/gmat/free-gm ... tice-test/
and you can find the additional practice tests for purchase once you have created a free student account.
Best of luck in your studies!
(Oh and the 800 score tests that you asked about are not bad on the Quant side, on the verbal side they are not very realistic).