As you can understand from the title of my review that my 1st language is not English, I bumped onto e gmat course after doing much of research and getting great reviews from almost everyone.
I would like to suggest everyone egmat SC and Scolorium is highly useful. As a team member they are highly active in support and easily reachable even during the online sessions. Egmat pre thinking approach is highly useful for GMAT not only for cr but also for SC and rc.
There online resources are best source for practice because every question has been selected after considerable discussion moreover the explanations are on lines with the Gmac.