Canada

Hi,
It is a good profile and chances are quite good too provided you are able to justify your reason to pursue an MS as you are already holding an ME. Your SOP and LORS shall play an important role as well.

Kindly visit the link mentioned below:
http://umanitoba.ca/student/admissions/international/

Undoubtedly, any field related to computer science/engineering will be good if you have opted for science stream in HSC.

List of low tuition universities in Canada for international students:
Name of Institution Tuition fees
Dominican University College $5,000
Brandon University $6,219
Universite de Saint-Boniface $6,420
Canadian Mennonite University $7,560
Memorial University Of Newfoundland $8,800
Southern Alberta Institute of Technology $5000 $7000
The Kings University College $9,920
Athabasca University $9,440 $10,490
Canadian Mennonite University $7,728 $7,728
Universit de Moncton $10,270 $10,270
Saint Paul University $9,836
Universite Saint- Anne $8,820
Mount Royal University $11,121

You may go for:
Post-graduate
Diplomas
Masters Programs
Doctorate Courses
Post-graduation courses in Canada offer a number of fields for students.

Dear Ishan,
Poland is not a bad choice but Canada is one of the most popular and best. If you have a strong profile I will suggest Canada. You may further zero in based on your budget, climatic conditions and University admission requirements.

Dear Vishant,
Apparently, every university requires either IELTS or TOEFL. Universities will prefer either IELTS or TOEFL scores, certain universities in US do not accept IELTS but TOEFL. Its difficult to specify a name from among thousands of universities, you must research properly, visit their websites and communicate with them. It's rare that you will find any university not accepting these scores. They might waive-off if your profile is strong.

You should go for B.Com as it has many good options as compared to BBA.

Yes, prepare for IELTS and GMAT and then check out the top ranking universities.