Great resources for GMAT preparation

The Verbal Scholaranium is a great resource offered by e-GMAT. It helps me to thoroughly study each verbal topics in the courses and to practice in test conditions. Dashboard and Skill Data are very useful in pointing out which topics I need to work on to increase scores. For someone who doesn't have lots of time, I think using Scholaranium to get more practice with his/her weak topic is a must to increase the verbal score. The platform is user-friendly and motivates students to keep working on questions.
SC is very good (a cliche as people already mention this a lot) as it has practice covering essential and advanced grammar points needed for GMAT.
CR is ok. I still got some questions whose explanation doesn't persuade me as the ones in OG. However, Scholaranium questions are more advanced than the ones in OG.
RC is good. I like to do 2 paragraphs per day just to keep me on track of solving RC with ease.

Thanks!