University of Pennsylvania. I think we're up to #4 or 5 for the top university in the US in US News and World Report. That's with the #1 business school, both undergrad and MBA. The ROTC unit is medium-sized, about 100 mids, but has a solid training program, esp for Marines. Philadelphia is a good town. Plus, if you have a scholarship, use it to the max possible--$20,000+/yr is definitely taking full advantage of Uncle Sam. Lastly, the first Commandant of the Marine Corps, Samuel Nicholas, is an alum. Admittedly, they didn't have NROTC then.
I don't really think that any school has an edge in getting people into particular communities, other than strong engineering schools having better luck with Nukes. If a staff member has an "in" with BuPers, it will help, but only for as long as that guy is there.
Whichever school you go to, make most of your decision based on the academics. NROTC staffs turn over every 3 years, anyway. The military will teach you what you need to know for its purposes, but your degree will be with you for a long time.