Great Quant section

Good quality Quant questions of all difficulties that are overall a little harder to solve than the actual GMAT questions. You only need to ace the advance topics questions if you're looking to score 51.
Great test taking system that recreates the exam environment. Though I didn't have the chance to fully utilize it, the new Scholaranium 2.0 with all its metrics looks promising in terms of performance analysis.
Both these factors helped me warm up for Quant just before taking the GMAT online exam.

On a final note, the quant section has all the study material, questions, practice tests and other sections you need to score 50 or above.