The above are all good points about St. Vincent's Manhattan vs. NUMC, but I had a different opinion after interviewing.
To me, NUMC seemed structurally more sound. It has a busy clinic and the residents seemed to get along pretty well. No doubt, the physical plant was not pretty, but I think it's worth the trade if one gets to see a lot of pathology.
More importantly, I preferred that NUMC is associated with a VA hospital and with SUNY Stony Brook. To me, having a VA is key. Would you rather have to spend a few months in India just to get your cataract numbers?
Also, they take four residents per year, which I think makes for a nicer program compared to 2/year. With more residents, there is more personal variation, and the work load / call schedule can be spread out more comfortably.
Finally, the didactics I think are in Manhattan, some at MEETH and some at NYEE. This seems pretty good, although one would have to make the effort to drive into Manhattan once a week.
To me, NUMC seems like the better choice than St. Vin Manhattan.
Just my viewpoint.