Both are solid programs; you will be well trained at either. Choosing between them is like choosing between pepsi and coke - its a profound personal decision. with that said a few things that might whey your appetite.
jacobi definitely has higher trauma volume. from some reliable sources:
Jacobi Medical Center 5019
Bellevue Hospital Center 4317
this trend is more acute with penetrating trauma. moreover, the jacobi selection is more severe. is this better? does bellevue have enough? i dont know jack, but them are the facts.
you work hard at either; if you land a laid back intern year for jacobi then that might smooth things a bit. however, I couldn't get a grip on whether the jacobi residents were happy (a few seemed miserable).
bellevue is certainly more academic, and has great conferences, famous morning rounds, and fab tox exposure etc... jacobi is more clinical, plus has HBO, burn center, snake bite center (?)
both have great reputations. in my conversations with EM attendings it has seemed that Jacobi had a stronger rep, but other MS4s (and EM residents to be) have told me that they thought they carried the same rep.
you wont go wrong with either. your gut feeling is more important than any of my rambles. observe a shift at both, or rotate at one and observe at the other. if you are looking at nyc dont overlook:
NYP. new program, great potential.
SLR. NYCs only decent 3 year program. a controversial place, but you decide for yourself.
KCHC. The same or more trauma than jacobi. huge volume. In the heart of brooklyn.