If you have an interest in Computer Science, then MNC in IIT BHU is an excellent choice as the program has more CS courses than Math. There are various other reasons that make this course an excellent choice
Basically, if you are inclined towards CS, then MNC at IIT BHU is better than both MNC at IIT Kanpur and CSE at newer IITs. MNC at IIT Kanpur is more inclined towards Math whereas the newer IITs lack the necessary infrastructure and opportunities.