Since I have done my MBBS from MAMC and MD from LHMC, I think I can answer this question. MAMC is the preferred college for everyone over the others except for the girls from the most conservative families. For girls, LHMC is usually the preferred choice over UCMS.
The reason for this is mainly about the reputation. UCMS loses out to the others because it was started much later than the other two. Also, the areas surrounding UCMS are rather more slum like.
Because Mamc is much bigger college in terms of both area and infrastructure and associated with many superspecialities also, the quality of learning is considered better in mamc. Also, the mamc’s associated hospitals LNJP and GBPant are among the largest hospitals in Delhi. Thats why it has been consistently rated among the top 3 medical colleges in India in almost all rating lists.
LHMC on the other hand is a little smaller than the others, but because of its amazing history (it is one of the oldest medical colleges in India and the oldest medical college for girls) and the surrounding areas (Connaught place is THE HUB), it remains the preference for many.
All the best!!
Dhawal Narang, MBBS from MAMC
Source: Quora Digest