Of course, being a NYCOM student, I say NYCOM. Reasons being: Location, Faculty, and 3rd and 4th year rotations.
I have a friend at SGU, a second year who's talking to me about their 3rd and 4th year placements. This said person really wants to rotate in NYC, but is pretty terrified they wont because many of these spots are going to the London based students. I'm not sure what the exact story is, but apparently, my friend honestly doesn't know where they are going to rotate at, which would totally bother me if I went there. I also hear of just how expensive it is to live in Grenda compile that with the cost of plane tickets back and forth, your looking at a pretty penny. For fin aid, you might not be able to get a US lender since you are going to a forgen school and such.
Now, with NYCOM, while I might not get my #1 most desired location for 3rd and 4th year, at least I know I will be able to stay in the NYC area. We have some amazing rotations AND many of the fellows at big name university centers stop by and give us lectures on their specialty. I love how we have integrated it all and many attending at NUMC, Downstate, ect come by and give us lectures.
With regard to ortho, at least as a DO you can apply to DO only residencies along with MD residencies. If you were to go to SGU, you wouldn't be able to apply to DO residencies. There is no system in place in case you wanted a fall back. During our Muscloskeletal system, we got taught by one of the big shots in the ortho field. He is a PD at a ortho residency in NYC. If you want, you can get early exposure to the filed. I remember him telling our class that he was having ortho residents over at our anatomy lab one day for them to practice surgery skills and that if any of us first years wanted to come by to let him know. I Don't think you will find the same thing at SGU.
And that is why I am going to say this is a no brainier. NYCOM hands down.