koko-
Regarding NYC. Some of thies depends on how strong your application is. If its really competitive (ie good class rank, high board scores, strong LOR's, research) then you will probalby interview at most places in NYC. And where you rotate will become more of an issue of what hospital appeals to you most.
However, if you are a 'medium' applicant or have some 'flaw' (and I use this word with trepidation) then you need to do some significant research and figure out where you are really interested in. An away rotation that you do really well in can completely obliterate any 'flag' in your application. (this happens every year here)
So, go to
www.scutwork.com and do a little research (look at what the med students say)
As a med student things you want to look for are:
-dedicated time with an attending. Your subi is going to be much more productive if you are working one on one with an attending instead of a resident.
-in a location that is good for you.
-is at a place that you are interested in.
Check out the EMRA website and figure out what kind of questions appeal to you. Do you want 3 or 4 year.
Do you need to be in manhatten? Do you want a 'down and dirty' county experience? a combination? purely cushy? any and all are available in nyc.
Its also a small small world. Rotate carefully here if you are interested and NEVER say an;ything bad about a program in nyc. the PD's ALL know each other. well.