Main Stream America Never Has An Opportunity 2 Visit Other Countries 2 Make An Intelligent Decision

Which are some of the best countries to do MS in computer science?

Usually US and Canada are the preferred choices for MS You should visit the websites of the colleges to see the courses offered and the fee structure. You require a good GRE score say above 304 to apply for a decent college in these countries. To be eligible for good schools  you need good score of >320 (getting scholarships become easier)OTP will help you gain skills and allow you to work in the field of your studies and gain experience  Look at the OPT offered by these countries. Since you are applying for s Science and Technology course look at US's STEM program17-Month OPT STEM ExtensionCountries like Australia too offer such facilities but only for courses 2 or above 2 yrs. However the fees in countries like USA, Canada and Australia are high and you would have to shell out easily >20L ( rough figure ) so you would need a loan and scholarship to help you. If fees is a concern look into Scandinavian countries like Finland, Norway , Denmark (avoid UK since you wont get OPT as per my knowledge ) since higher education is usually free of cost for the Euro zone citizens and are marginal for non euro zone citizens. However their class strength is usually less. But the climate is not  favorable in these countries ( basically extremely low temp) However also look at the job scenario in these countries and whether you would be able to gain some exp before coming back to your home country.  This should be your backup option thoughIn addition, prior job experience and a good profile (say good in cultural activities and sports also make getting into a great school easier)