Well the Ramada Plaza NY is not in Manhattan. It's at La Guardia airport. So cross that off the list. The Raddison gets dreadful reviews.
I'd rank the remaining hotels as follows
Shoreham- nice midtown hotel with modern rooms in a good location. Smaller, boutique type hotel.
Hilton NY- similar location to above in midtown. BIG tour/convention type hotel but nice.
Murray Hill East Suite- as the name implies, a suite hotel so you'd likely get a room with a small kitchen and maybe some extra space. It's in a good midtown location, but a bit quieter than above.
Cosmopolitan- a modern/trendy BUDGET hotel in Tribeca which is downtown nearer Wall St., Chinatown, Little Italy. It's a fun area but not considered as central.
Since this list is all over the place in terms of quality and type of hotel, I'm curious where the list comes from? Are these options part of a package? Are the prices all the same? They can't possibly be.