hello jagan

as you are comparing colleges ,so don't just rely on a single view and research carefully before taking admissions .for this question ,i think i will chose doing btech from top NITs rather then a dual degree . i believe dual degree will help you more if you want to go into research field . after doing btech you have a lot new options than dual degree. also the placements is comparable between the two .even i think the placement is better in btech .so these are all my personal views and you should search more by yourselves

best wishes