Hello aspirant. Both of them are really good colleges for MBA. In terms of placements, quality of education and rankings like nirf, business today the times etc. Both of them are really good. The course curriculum in IMS noida is a bit not an updated one. But except about that everything is great here. In my suggestion, I would suggest you to go for IMS noida because, the placements and packages are comparatively better and it stays at higher position in comparison with iMI.
Hope this helps