Wealth of questions on this and ability to practice on selective questions

There are a lot of questions in this quant scholaranium. It also has the ability to pick your own difficulty and practice those questions. You can create your own exam with ALL highly difficult (700+ level) questions with recommended time set as well. This way it creates a very good mock GMAT type situation where you have to finish these in a certain time frame. It is again one of the best test/quiz bank i have encountered. and guys at e-gmat do a great job at providing full explanations of ALL these questions in depth. Incase of confusion they also provide futher individual responses within the answer sets of these question. Even with this bank online it feels like they are teaching one-on-one. Great and I HIGHLY recommend this scholaranium.