Each course has its own importance and need. You ‘ll find ample of opportunities after completion of any course you opted if you did really well in academics. The opportunities are not so much within the type of degree, as it is within the individual who has the degree. Opportunities are always there. It is up to you to take advantage of them through creative and critical thinking, assertiveness, perseverance, commitment, positive attitude, and the ability to think through long-term benefits. 
Identify your actual interests, aptitudes, strengths, and weaknesses and match it with the choices you have to shortlist the apt one for you. Always go for those colleges which give Scholarships, best placements, exposure to the industry, Research, efficient knowledgeable and experienced faculty, flexible curriculum and teaching pedagogues, infrastructure, and diverse culture.

Good colleges are:
IITs, NITs, IIITs, BITS, LPU, VIT
The Maharaja Sayajirao University of Vadodara, Gujarat,
Lovely Professional University Jalandhar, Punjab,
Anna University, Chennai, Tamil Nadu,
Maharashtra Institute of Technology (MIT) Pune, Maharashtra,
PSG College of Technology, Coimbatore,
University of Petroleum and Energy Studies- Uttarakhand

Hi Aspirant,
The following link will help you find some of the best colleges of Tamil Nadu-

https://engineering.careers360.com/colleges/ranking/2018/top-engineering-colleges-in-tamil-nadu

For the best course,it totally depends on your interest. Do not go for a branch in which you're interested in after just seeing the placements or packages of that.Go for what you want to do,it'll be very beneficial in the end.

Hope this helps.