Which course is better among MBA and M.Tech to become a product manager?

Technical part requires M.Tech and my personal experience says that in a company once you go in as M.Tech, then if you do great, then you do have option to get your MBA done too. And, as you get to the core team, M.Tech is a better side in most.

If you want to be product marketing manager, then you should pursue MBA, but if you want to go more on technical side of the product then you need to pursue M.Tech.