Which one is better after B.Tech- MBA or M.Tech? What is the difference between this?

See, I always say if someone loves technology and would like to stick around technology then M.Tech is a good option for career. Otherwise MBA is a management degree which will help to get a managerial status with better earning.

again your interest matters here, mba is good if your are doing it in reputed one like iim, the same is with m.tech..