As an alumnus of UCMS, I will shed some light on my college.

UCMS is one of the top 10 medical colleges in India. It falls under Delhi University. The academics are good, and the college fee is affordable. The campus is good too. Various college events are organized on a regular basis.

The seniors and faculty are very helpful. It is one of the major hospitals of East Delhi, so it has a lot of OPDs. The metro station is close by, so good connectivity is offered to other parts like Chandni Chowk, Rajiv Chowk, etc. 

PGIMS Rohtak is the best medical college in Haryana. It has a very big campus and a lot of OPDs. 

UCMS is a better choice. But if you wish to complete your degree from Haryana, you can choose PGIMS Rohtak. 

Among the three option mentioned, PGIMER and RML hospital is the best option for doing an MD in General Medicine. It offers great exposure and academics. The spectrum of cases, facilities available, quality of care offered is exceptional. Other than Oncology, you will have exposure to all subspecialties.

UCMS is almost in the same range. However, it has a locational disadvantage. Other than that the spectrum of cases and academics offered at the institute is quite good. 

VMMC is also a decent option. But it has a high patient load. Academics are really poor and you will have to go out of your way to learn things.