There are many tests out there claiming to emulate the GMATPrep CAT environment. But that in my opinion is irrelevant.

To hit the Q50/51 mark, you need to practice at least 2000 questions - they need to test certain concepts. And most importantly, you need to familiarize yourself with those concepts by REPETITION.

This is where the GMAT Club tests are superior - by allowing the user to review mistakes (Mistake Analysis) and create quizzes out of questions you got wrong.

I was stuck on 49 for the longest time - the moment i started building quizzes out of the error log - by score boosted.

Further more, the quality of the questions are on par with GMATPrep - which I would recomment to anyone.

Hope this was helpful.

bb10