Hi Aditya, welcome to the forum.
There is a very useful IIS (Ice In Space) article here....
http://www.iceinspace.com.au/63-374-0-0-1-0.html
In my experience, anything above 10 x becomes very difficult to hold steady after a few minutes.
If you can get a shop to let you view through a few different sizes for a few minutes each, I think you will get a good feel for the difference in stabillity.
Using binos on a tripod does not suit all situations.
Michael.