I believe that Jamboree has a completely structured course.
It was one of the courses I took.
I wasn't thrilled by the Live online instructor Param, verbal faculty.
But Jamboree took my complaint seriously and assigned me to different tutor. Tarun and Megha were both great instructors. They took out time from their personal schedule just to guide me personally.
After those, I was scoring like 730-740 in practice tests.
You can check my video review on Jamboree's live online website.
In my opinion, the resources, especially the Jamboree's website is most useful.
They have converted all paper based+ past official Questions into sectional quiz format.
It is great for pacing yourself for the GMAT.
I think Jamboree is a good course overall.
Posted from my mobile device