Both the colleges you have mentioned are extremely good with their level of medical undergraduate education and christian medical college well all is well-known to give hands-on experience with the most of the clinical techniques and also train student sequential in preclinical and paraclinical subjects

Madras medical college is also one of the premier medical colleges in the states and preferred by many students sensor is a government medical college and gives more patient exposed also Christian medical college Vellore also has a big turnover of patients throughout the year but being a private medical college only 15 out of 100 students who admitted in every batch at the MBBS level are general category students

the entrance is definitely tougher for Christian medical college Vellore and if you qualify in it I would advise you to try for it but talking practically it is much easier to secure a chance into Madras medical college via Neet