Dangerously close to the real GMAT

The 15 practice tests. I think Experts Global has hacked the exact logic with which GMAC prepares its questions. The questions look and feel exactly like those on the real GMAT. They even test the same concepts with exactly the same modus operandi, that the real GMAT does.

The UI of the practice tests is similar to that of the real GMAT. This also helps, because when your eyes get used to reading text in a similar font style and the number of clicks are same, the positioning of options is similar, colours are similar etc, then it gives you an organic sense familiarity.

The Experts Global practice tests are by far the closest thing to the real GMAT.