Hi
suyogptl22I have been to jamboree coaching and it actually depends if what your more comfortable with classroom coaching or online coaching.
In my experience jamboree is more suitable if you already have a score in the range of 600 and want to improve it from there.
If you need help in a particular section like verbal or Quant where you need drastic help in score improvement, I would suggest go for a online coaching.
Online coaching are more flexible and can be completed at the pace your comfortable with.
Here are some other options for coaching with their pros and cons
https://gmatclub.com/forum/best-gmat-co ... ml?fl=menu